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  • Q&A with Australian Health Practitioners

    Does my very light period mean implantation or ovulation?

    I have PCOS (normal weight) and have irregular periods. Most recently they have been at about 35 days after taking progesterone. I am also on Metformin 1000mg a day and have been since October 2013. My husband and I have been TTC since then. If my period was at 35 days again, it would have been due 5 days ago, but instead on day 36, I got a very very light period, almost nonexistent unless wiping and it was very light pink and sometimes brown. I’ve felt like I’ve had my period, with back aches etc, but it doesn’t quite feel the same as usual. I took a test last night and it was negative.
    I am just not really sure if that was my period or implantation or ovulation?
  • Find a professional to answer your question

  • 2


    Dr Karen Osborne

    GP (General Practitioner)

    Sydney GP specialising in Reproductive & Sexual Health for both women and men. At Clinic 66, we deal with a wide range of reproductive and … View Profile

    Light bleeding / spotting is very common in early pregnancy but there can be lots of other causes too.
    The best thing to do is to repeat the pregnancy test after 1 week if you still haven't had a normal period or to visit your doctor to arrange a blood pregnancy test which is a much more sensitive test than the urinary test. If the bleeding persists, please visit a doctor to check it out.
    Best of luck with trying to conceive and I hope you're taking your folic acid!

  • 1


    Dr Kevin Lee

    Endocrinologist, Nuclear Medicine Physician

    Consultant Physician in Endocrinology, Diabetes & Nuclear Medicine. I am on Twitter @dr_kevinlee. I am on Facebook I help patients with obesity, diabetes, thyroid, … View Profile

    Another cause of light period is anovulatory cycle.

    One requires regular follow-up with reproductive endocrinologist/fertility specialist when using progestin and metformin for PCOS + TTC

    Dr Kevin Lee
    BSc(Med), MBBS, MHS(Clin Epi), FRACP
    Consultant Physician Endocrinologist

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