Abnormal bleeding

Hi all, I have a concern I would like to share and get some feed back

on. I had started taking conception pills by a company called eunatural about two months ago and I noticed my cycles have been lasting way longer than normal. Close to a month long. This month I felt like I have had two cycles back to back. This is completely no normal for me. I am a little nervous and it is interfering with my sex life. I spoke with the owner of the company and she was telling about Vitex. Has any one heard of or experienced this before ? Is there something I can do to regulate my self again.