Dear nic: It is OK to start with the Provera concern? If a woman does not wish to use Provera/medroxyprogesterone acetate to "kick start" her period, the FDA has approved natural micronized progesterone in peanut oil ("Prometrium") to be used for this purpose. Both drugs are readily available at regular pharmacies. Here's a comparison:
1. Provera (or generic) is 10 mg per day for 5 days; Prometrium is dosed as two 200 mg capsules for 10 days.
2. Provera is MUCH less expensive--especially as a generic.
3. If one has a peanut allergy Prometrium should be avoided.
If you need to elicit a flow, you could safely choose either regimen. Some women will use Provera every few months if they have a history of frequent missed flows.
In terms of your light bleed followed by three weeks of spotting. This is a classic pattern for missed ovulations. If you do not ovulate, the estrogen build up of the lining continues, but without the usual ovulation associated progesterone. The hormone levels don't decline, and the lining stays up inside the uterus—your missed period. Alternatively, just the top layer of the built up lining will begin to shed erratically. This produces prolonged, too light bleeding.
Causes for not ovulating are multifold: thyroid problems, pituitary problems, ovarian cysts, physical stressors (eg sudden increases in exercise, crash dieting), emotional stressors (problems with partners, money worries), increased body weight, anorexia, rotating shifts at work, etc. If you are currently hypothyroid that can certainly interfere with regular ovulations. Having a history of multiple ovarian cysts (PCOS) can definitely interfere with ovulations as well.
It is great that you were able to conceive, and deliver, your second child. That suggests that your hormones were relatively normal at the time of conception--good news. Hopefully the blood test results will be in the normal range.
Yours,
Jane