C.K.
Hi V.,
My period was really erratic for a few months after stopping the pill. I don't remember exactly how long before they were regular--maybe 3 or 4 months.
If there's a chance you could already be pregnant, take a pregnancy test. Otherwise, just sit back and wait. I take Evening Primrose Oil to regulate my periods and reduce cramps; it works like a charm for me. Perhaps you would also find it beneficial. You can buy EPO capsules anywhere--Walgreen's, Target. They took a couple of months before I really felt the full effects.
Good luck!