Dear babystarks,
it may take some time for your period to return to normal after coming off the birth control pill. It may be late, early and even heavier or lighter than usual, your body now has to function on it's own without the help of the pill to control your period. Some women find it takes quite a while to become pregnant after stopping birth control, others seem to fall pregnant immediately after, everyone is different. I fell pregnant 3 months after stopping birth control, and I had been on the pill for 13 years prior to that. So I consider myself very lucky. You could take a test if you feel you may be pregnant, it certainly won't hurt, and would definately give you piece of mind if nothing else.
Good luck and I hope you are pregnant very soon...
Suzy