Hello ladies, I have been reading your postings and wondering why...

Hello ladies, I have been reading your postings and wondering why I hadn't read them before starting this pill. I have been off BC for years and recently started taking Yasmin. I began the pack on the first day of my period and all of the sudden, POOF ! It was gone! I had still had abdominal pains (similar to cramps, I guess). Exactly one week later, I began light spotting..and then...HEAVY flow, accompanied by lots of pain. I am on day 7 of this uncofortable and painful venture and wonder if this has happened to more women. I have never had this kind of pain or flow before (especially for this amount of time.) Is there any recommendations on another form of BC that has worked better for any of you?? Thanks for your time