Hi, I had the same problem( just I wasn't planing for pregnancy) I had irregular periods for more than a year, sometimes I didn't have a period for like 3 or 4 months, I started using herbal medicines and phlebotomy and leeched. for months it didn't work, I was just giving up about another period that my mother found another herbal thing"Castor oil" it worked like 3 times, I mean I had 3 completely regular periods, then they stopped again. So my mother came up with another herbal idea "Chamomile herbal tea" which I'm using with Cloves tea and I use now and I had 5 periods which came like clock. I'm not a doctor and I don't know if it is going to work for everyone. please consult with a doctor before you use these, as I did.
And I should mention that I am fat and it is working better since I started loosing weight.