My OBGYN put me on this pill to regulate my period. I have had pr...

My OBGYN put me on this pill to regulate my period. I have had prolonged period lasting 2 to 2 1/2 weeks in the last four months which caused me to be anemic. I am 32 and this is the first time i have used a bc pills. I am on my first trial pack and on my second week of using the pills. So far, no extreme side effects for me. The only thing that concerned me is that I am experiencing breakthrough bleeding, which from reading some of the posts here, is quite normal. 2 days after taking the pill, my period did stop. Then on the 3rd or 4th day, I had light spotting and now i seem to have a light period. I did feel cramps as well but nothing too painful. What bugged me the most is the gassy, constipation feeling. But other than that, no extreme emotional symptoms. Other than the breakthrough bleeding, I still have to give my bc pills a chance to see if it really is working.