What are the 10 danger signs of pregnancy in the first trimester?

10 Danger Signs in Early Pregnancy You Shouldn’t Ignore

While the first trimester can bring typical symptoms like nausea and fatigue, some signs signal something more serious. Knowing the red flags could protect both you and your baby.

Severe headache that lingers or worsens could point to high blood pressure or preeclampsia—even early on. Paired with changes in vision, like blurriness or spots, it’s time to call your provider.

Dizziness or fainting may seem like just low blood sugar or dehydration, but if it keeps happening, it could indicate an underlying issue such as low hemoglobin or ectopic pregnancy.

A fever of 100.4º F or higher isn’t just a cold. In pregnancy, it can signal infection—like a urinary tract issue or flu—that needs prompt treatment.

Swelling is common, but extreme swelling in the hands or face might suggest preeclampsia, especially if it comes with headaches or vision changes.

Trouble breathing or sudden shortness of breath can be alarming. It may stem from anxiety, but when paired with chest pain or a racing heart, it could point to a pulmonary or cardiac issue—or even a blood clot.

And perhaps the most urgent: thoughts about harming yourself or your baby. Perinatal mood disorders are real and common. You’re not alone, and help is available—immediately.

While not all first-trimester symptoms are dangerous, don’t downplay what feels off. Trust your gut. When in doubt, call your doctor. Early intervention can make all the difference.