I am not sure if you are able to respond to my questions, but if not, I 'll give you my take on your situation. Irregular bleeding is a very common side effect of the Depo Provera unfortunately. Most women, however, will stop bleeding the longer they are on it. So it may just be a matter of time and more shots before it stops. However, the downside to this is that you could become more anemic in the meantime, and it can also cause you to have a significant decrease in your bone density over time as well the longer you are on it, leading to osteopenia or osteoporosis.

For you, given that you have auras with your migraines, birth control pills may be too dangerous to use because of an increase risk of stroke. You may do better from a bleeding standpoint using the mirena IUD instead of the Depo Provera. Typically with the mirena IUD, you will have less frequent and lighter periods, without the breakthrough bleeding. A lot of it has to do with whether you are looking to get pregnant in the future. It can take up to a year to start ovulating again after stopping depo provera, so if you are not interested in getting pregnant soon, then the IUD may not be a bad alternative. There is no way to predict when or if the bleeding will stop while on the Depo Provera, other than that it is possible that it may never (about a 20% chance), or with continued use, it will stop altogether (about 80% chance by one year of use). As long as you continue to bleed, you will need to continue to take the iron and feel the effects of the anemia. If the timing works out with planning with future pregnancy, then the IUD would be a really good alternative. I hope this is helpful. Please let me know if you have any questions and I will be happy to answer them.