How about getting off the pill now to let your body regulate...just use condoms...then getting pregnant will depend on when you ovulate...it may take a couple months!
after one cycle i was back to normal :-) i know it can take some women up to 6 months so i planned ahead and got off in april, even though i didn't start trying till late aug. like njeosys says, you need to start to learn your cycle. i was on the pill for 10 years so i was used to the 28 days from that. i learned from charting my cycle (which i highly recommend) that my true cycle is, in fact, 40 days!!! ahhhh!!!!!! what a waiting game! i also recommend the book "taking charge of your fertility" to everyone. that, along with this forum, helped me a lot! best of luck to you!
You'd have to begin a normal cycle first. Then you need to find out how long those cycles are (some women have 27-32 days cycles). Then you'd have to figure out when you ovulate.