Trimester Tips

What's normal, and when to call.

Every pregnancy is different, but there are patterns worth knowing — what tends to happen each trimester, and the signs that are always worth a call to your provider.

Pregnant woman tracking symptoms by trimester

Every pregnancy book gives you the textbook version. This is the version I wish I'd had — what actually felt normal across five pregnancies, and the handful of times something genuinely warranted a call to my doctor. — Anahely

Jump to a section

First Trimester Second Trimester Third Trimester Always Call Immediately FAQs

First Trimester

Weeks 1–13

Usually Normal

Nausea, with or without vomiting, especially mornings
Extreme fatigue
Tender, swelling breasts
Light spotting around implantation
Mood swings and heightened emotions
Food aversions or sudden cravings

Call Your Doctor

Heavy bleeding, especially with cramping
Severe abdominal pain on one side
Vomiting so severe you can't keep fluids down
Fever over 100.4°F (38°C)
Fainting or severe dizziness

Quick tipThe first trimester is often the hardest emotionally — the exhaustion is real, and it's temporary. Most people feel noticeably better by week 13–14.

Second Trimester

Weeks 14–27

Usually Normal

Increased energy — often the easiest trimester
First flutters of movement, usually 18–22 weeks
Round ligament pain (sharp, brief hip/groin twinges)
Visible bump and rapid body changes
Mild swelling in feet by end of day
Braxton Hicks contractions (painless, irregular)

Call Your Doctor

No movement felt by 24 weeks, or a noticeable drop-off after movement starts
Severe or persistent headaches
Sudden swelling in face or hands
Vision changes — blurriness, spots, flashing
Regular, painful contractions before 37 weeks

Quick tipThis is when most people schedule the anatomy scan (around 18–20 weeks) — a good time to write down any questions that have come up.

Third Trimester

Weeks 28–40+

Usually Normal

Increasing fatigue and trouble sleeping
Shortness of breath as baby takes up more room
Frequent urination
More frequent Braxton Hicks
Lower back and pelvic pressure
Nesting instinct kicking in

Call Your Doctor

Fluid leaking, gushing, or your water breaking
Contractions 5 minutes apart or closer, lasting a minute
Decreased fetal movement
Severe swelling with headache or vision changes
Any vaginal bleeding

Quick tipDoing a "kick count" once a day in the third trimester — noting how long it takes to feel 10 movements — is a simple way to stay tuned in to what's normal for your baby specifically.

Always Call Immediately

Regardless of trimester, these symptoms warrant a call right away — not a wait-and-see.

Heavy vaginal bleeding
Severe, unrelenting abdominal pain
Signs of preeclampsia — severe headache, vision changes, swelling with high blood pressure
Thoughts of harming yourself — call your provider or a crisis line right away
A fall, car accident, or significant injury
Any sudden, significant change from what's felt normal for your pregnancy

FAQs

Is it normal to feel nothing at all in the first trimester?

Yes — some people have very few symptoms and that's completely normal too. Symptoms (or the lack of them) aren't a sign of how the pregnancy is going.

When should I feel the baby move for the first time?

Usually between 18–22 weeks for a first pregnancy, sometimes earlier in later pregnancies.

Are Braxton Hicks contractions dangerous?

No — they're painless (or mildly uncomfortable), irregular, and don't get closer together over time. Real labor contractions do.

How often should I have prenatal appointments?

Typically monthly until 28 weeks, every 2 weeks until 36, then weekly until delivery — though this varies by provider and pregnancy.

What's a kick count and when should I start?

Tracking how long it takes to feel 10 fetal movements, usually starting around 28 weeks. Ask your provider what's typical for your pregnancy.

"You don't need a reason to call your doctor other than 'something feels off.' That's reason enough."

What's normal, and when to call.

Every pregnancy is different, but there are patterns worth knowing — what tends to happen each trimester, and the signs that are always worth a call to your provider.

Jump to a section

First Trimester Second Trimester Third Trimester Always Call Immediately FAQs

First Trimester

Weeks 1–13

Usually Normal

Nausea, with or without vomiting, especially mornings
Extreme fatigue
Tender, swelling breasts
Light spotting around implantation
Mood swings and heightened emotions
Food aversions or sudden cravings

Call Your Doctor

Heavy bleeding, especially with cramping
Severe abdominal pain on one side
Vomiting so severe you can't keep fluids down
Fever over 100.4°F (38°C)
Fainting or severe dizziness

Quick tipThe first trimester is often the hardest emotionally — the exhaustion is real, and it's temporary. Most people feel noticeably better by week 13–14.

Second Trimester

Weeks 14–27

Usually Normal

Increased energy — often the easiest trimester
First flutters of movement, usually 18–22 weeks
Round ligament pain (sharp, brief hip/groin twinges)
Visible bump and rapid body changes
Mild swelling in feet by end of day
Braxton Hicks contractions (painless, irregular)

Call Your Doctor

No movement felt by 24 weeks, or a noticeable drop-off after movement starts
Severe or persistent headaches
Sudden swelling in face or hands
Vision changes — blurriness, spots, flashing
Regular, painful contractions before 37 weeks

Quick tipThis is when most people schedule the anatomy scan (around 18–20 weeks) — a good time to write down any questions that have come up.

Third Trimester

Weeks 28–40+

Usually Normal

Increasing fatigue and trouble sleeping
Shortness of breath as baby takes up more room
Frequent urination
More frequent Braxton Hicks
Lower back and pelvic pressure
Nesting instinct kicking in

Call Your Doctor

Fluid leaking, gushing, or your water breaking
Contractions 5 minutes apart or closer, lasting a minute
Decreased fetal movement
Severe swelling with headache or vision changes
Any vaginal bleeding

Quick tipDoing a "kick count" once a day in the third trimester — noting how long it takes to feel 10 movements — is a simple way to stay tuned in to what's normal for your baby specifically.

Always Call Immediately

Regardless of trimester, these symptoms warrant a call right away — not a wait-and-see.

Heavy vaginal bleeding
Severe, unrelenting abdominal pain
Signs of preeclampsia — severe headache, vision changes, swelling with high blood pressure
Thoughts of harming yourself — call your provider or a crisis line right away
A fall, car accident, or significant injury
Any sudden, significant change from what's felt normal for your pregnancy

FAQs

Is it normal to feel nothing at all in the first trimester?

Yes — some people have very few symptoms and that's completely normal too. Symptoms (or the lack of them) aren't a sign of how the pregnancy is going.

When should I feel the baby move for the first time?

Usually between 18–22 weeks for a first pregnancy, sometimes earlier in later pregnancies.

Are Braxton Hicks contractions dangerous?

No — they're painless (or mildly uncomfortable), irregular, and don't get closer together over time. Real labor contractions do.

How often should I have prenatal appointments?

Typically monthly until 28 weeks, every 2 weeks until 36, then weekly until delivery — though this varies by provider and pregnancy.

What's a kick count and when should I start?

Tracking how long it takes to feel 10 fetal movements, usually starting around 28 weeks. Ask your provider what's typical for your pregnancy.

"You don't need a reason to call your doctor other than 'something feels off.' That's reason enough."

What's normal, and when to call.

First Trimester

Usually Normal

Call Your Doctor

Second Trimester

Usually Normal

Call Your Doctor

Third Trimester

Usually Normal

Call Your Doctor

Always Call Immediately

FAQs

Is it normal to feel nothing at all in the first trimester?

When should I feel the baby move for the first time?

Are Braxton Hicks contractions dangerous?

How often should I have prenatal appointments?

What's a kick count and when should I start?

More pregnancy content is on the way.

What's normal, and when to call.

First Trimester

Usually Normal

Call Your Doctor

Second Trimester

Usually Normal

Call Your Doctor

Third Trimester

Usually Normal

Call Your Doctor

Always Call Immediately

FAQs

Is it normal to feel nothing at all in the first trimester?

When should I feel the baby move for the first time?

Are Braxton Hicks contractions dangerous?

How often should I have prenatal appointments?

What's a kick count and when should I start?

More pregnancy content is on the way.