Dear Ambertodd (thanks for the photo!):The most common reason for a menstrual pattern like you have described is not having an ovulation every month. In a normal cycle, estrogen is produced all month. Estrogen is responsible for building up the lining of your uterus so you have something to shed each month.
In a normal cycle, progesterone production increases following ovulation and release of an egg.. Progesterone "stabilizes" the uterine lining in preparation for a possible implantation of a new pregnancy. If you are not pregnant that month the levels of estrogen and progesterone fall, triggering the release of the uterine lining—your period.
So, if you do not ovulate, the estrogen build up of the lining continues, but without the usual ovulation associated progesterone. Thus, the hormone levels don't decline, and the lining stays up inside the uterus—as a missed/late period. Alternatively, the built up lining can begin to shed on its own creating erratic bleeding patterns which are usually "too-light" or super heavy and prolonged.
Provera is a common way to trigger a flow under these circumstances. If you have been several months without a period, a gynecologist may give you some progesterone in a pill form (eg Provera 10 mg for 5 days). Within 48-72 hours after stopping the progesterone your "progesterone blood level" will fall, triggering the release of the lining that has been building up. Many women report that these periods are very heavy-- as though several months of lining are shed.
In your specific case Ambertodd, it sounds like you have not been getting predictable cycle control with the use of Provera. This can occur if the lining of the uterus gets very thinned out (as what happens when women use DepoProvera). Alternatively some parts of your lining may be out of synch leading to constant breakthrough bleeding. Lastly, a new chlamydia infection or polyps of the lining of the uterus can prompt lots of breakthrough bleeding.
Bottom line, I would urge you to let your GYN know about your current pattern of constant breakthrough bleeding. They may want to change your medication regimen to see if the spotting can be stopped.
Yours,
Jane
[br>