Long period

So I'm 10 weeks Postpartum. After I had my daughter I had my period for about a month. I went and had my check up with my doctor at 6 weeks PP and he put me on a pill form of birth control. It was going good for about a week. Then I got my period while on the white pills which are for not getting your period. I continued to take all the pills and started a new pack. I'm still bleeding. It's been a good 3-4 weeks of me bleeding. What should I do? Is this normal? And I have all symptoms of a period....cramps, bloating, and ache, and headache. I'm so frustrated, horny, and just want it to be over. ANY SUGGESTIONS???