Skip to content


    Exciting News for WebMD Members!

    We've been busy behind the scenes building new message boards for you. You'll have new and easier ways to find messages, connect with others, and share your stories.

    And, this will all be available on your smartphone or other mobile device!

    What Do You Need to Do?

    The message board you're used to will be closing in the coming weeks. While many of your boards will be making the move to our new home, your posts will not. Want to keep a discussion going? Save posts you want to continue (this includes your member profile story), so that you can re-post them in the new message boards.

    Keep an eye here and on your email inbox, we'll be back in touch soon to give you all the information you need!

    Yours in health,
    WebMD Message Boards Management

    Includes Expert Content
    Vaginal Blood during a UTI but not on period?
    An_248321 posted:
    I just started antibiotics for a UTI on Friday (three days ago) and my period isn't supposed to come until the end of the month. However, just now I'm experiencing thick, dark vaginal blood and slight cramping. I'm wondering if it's because I didn't take my birth control last night, having to do with the UTI, or my period's off schedule?
    Jane Harrison Hohner, RN, RNP responded:
    Dear An: Alas, breakthrough bleeding (BTB) can be a common side effect of most types of hormonal birth control (eg pills/patch/ring/shot/Mirena IUD). Among birth control pill users BTB frequently occurs after a missed or late pill. A UTI would not usually, by itself, prompt BTB. Also the medications usually prescribed for a UTI are not of the type that would interfere with hormone levels in your contraceptive pill.

    Continue with your UTI medications and birth control pills as prescribed despite any BTB. If the BTB persists let the GYN or clinic that prescribed your birth control pills know.


    Helpful Tips

    Be the first to post a Tip!

    Expert Blog

    Below the Belt: Women's Health - Jane Harrison-Hohner, RN, RNP

    From HPV to irregular periods to PMS to fibroids, Jane Harrison-Hohner, RN, is here to share her knowledge and insight...Read More

    Report Problems With Your Medications to the FDA

    FDAYou are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.