Ob-Gyn questions? Ask a gynecologist online.
this sounds like a hormonal imbalance due to the use of provera. As you are willing to conceive, taking birth control pill is not a solution. I would recommend a different hormone (progesterone) which should be used for 10 days to stop bleeding and regulate the cycle, ask your OB/GYN for prescription. For the longer term the use of monk´s pepper (Vitex agnus-castus, over the counter at pharmacy) can also rise the chance to get pregnant.
Dr. N. Scheufele
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Thanks a lot, all the best for you,