Product
Product
Health Library
Health Library
Calculators
Calculators
About
About

    PMS vs. pregnancy symptoms: How can you spot the difference?

    Published 19 January 2023
    Fact Checked
    Medically reviewed by Dr. Jenna Flanagan, Academic generalist obstetrician and gynecologist, Beth Israel Deaconess Medical Center, Massachusetts, US
    Flo Fact-Checking Standards

    Every piece of content at Flo Health adheres to the highest editorial standards for language, style, and medical accuracy. To learn what we do to deliver the best health and lifestyle insights to you, check out our content review principles.

    Wondering whether those symptoms you’re experiencing could be PMS or pregnancy? A doctor explains how to try to tell the difference.

    Hormonal changes in your body can lead to all kinds of symptoms. Raise your hand if you’ve ever experienced mood swings, headaches, or bloating around the time of your period. However, it can sometimes be difficult to pinpoint exactly what’s causing those hormonal changes in the first place, especially if there’s a chance you could be pregnant. 

    It can be tricky to figure out whether you’re experiencing premenstrual syndrome (PMS), a condition that causes a variety of symptoms to kick in around the time of your period, or the early signs of pregnancy, considering there’s quite a lot of overlap between the two. Not very helpful, Mother Nature … 

    That’s why we’ve asked Dr. Marta Perez, obstetrician and gynecologist, Washington University School of Medicine, Missouri, US, to talk us through the differences between PMS and pregnancy symptoms. For more info, you can check out our guide on why you might be experiencing period symptoms but you're not on your period.