A 3 week period sounds most unpleasant. Some women can have menstrual irregularities after getting long-term injections for birth control
, and what is often seen is a very heavy period followed by a lack of periods. However, it is always important to make sure that you don't become anemic because of overly heavy periods, especially if you have recently given birth. With any questions about side effects from birth control or your other birth control options, the best place to start is with your OB/GYN. He or she can make sure that your health isn't being affected because of the irregular periods and can also discuss with you the expected course for someone on the contraception route you choose. It may be that you don't want to continue with the birth control injections, but your doctor
can give you a better sense of what to expect moving forward. It may be that you will have very light, if any, periods moving forward. However, there are other options which your doctor can discuss with you, and you may find that there is another route that appeals to you more. The most important thing is that you are healthy and feel comfortable with your choice. Please speak with your OB/GYN.