Progesterone and length of menstrual cycle

by Anonymous
(Virginia, USA)

This past month I started progesterone therapy (for PMS symptoms) on day #15 until my period started. I would use 1/4 teaspoon (20 mg) of cream twice daily. In checking my cycle, my period shortened by 3 days; I began bleeding on day #25 instead of #28. I quit using the progesterone cream once bleeding started.

I am wondering if it is possible that using the progesterone changed the length of my cycle. I also haven't noticed much of a change in my PMS symptoms since beginning the progesterone cream therapy, but suspect it will take a few months of consistent usage before noticeable results appear.

I am 41 years old, menstruating regularly and am still nursing my baby boy, though will be weaning him soon. I am on 30 mg Armour Thyroid for hypothyroidism, and Wellbutrin XL for depression. Thank you.

Comments for Progesterone and length of menstrual cycle

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Feb 25, 2010
Progesterone and length of menstrual cycle
by: Wray

Progesterone can disrupt the cycle when first starting it, you should have been warned about this. Please see this web page. It does take time to settle down, so please be patient. The amount of progesterone you're using won't make much difference to your symptoms. The amount used should be between 100-200mg/day to have any affect. Please have a vitamin D test done, a lack of this affects the benefits of progesterone, affects the thyroid and causes depression. Progesterone and serotonin drop sharply after birth, causing post natal depression in up to 25% of women, undoubtedly you have PND. It is vital to replace the low level you have which will help the depression, as it raises serotonin levels. There are many natural antidepressants you can use too, rather than the AD you are taking, please see this web page.

Please also read what Dr Dalton has to say on PND. She's written an excellent book about it which is well worth getting. Take care, Wray

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