Natural periods after BC

2 years ago when i was alot more happy and i was loosing weight which caused me to ovulate alot more and have periods without any method of BC. I have been on the pill for almost 3 months now and i really want to start getting my "natural " periods back. I was just wondering how long it would take to get regular periods back after stopping BC ? i am also going to try to loose weight to give iy that extra boost.