My husband and I have decided to try to conceive after taking birth control for 15 months. I stopped taking Ortho Tri-Cyclen Lo in mid february. I had my period at the end of my pill pack in February, but did not have another period until April 19th. It is now the end of June and I have not had a period since April. I took a home pregnancy test on May 21 and June 18. Both tests were negative. Could there be some other cause for my irregular cycle or is it probably just that my body is still adjusting to stopping birth control? Should I contact my doctor? Also, is it possible that I am ovulating since my cycle is so messed up? I have not had a change in stress level, exercise, weight or anything else that typically causes missed periods.