I went off the Birth Control Pill at the end of November, I had my period that week and haven' had it since. My husband and I are trying to get prenant and test have all ben negative. Since I started the pill two years ago, I have lost weight, I'm underweight for my height but I eat very healthy and several small meals throughout the day, while I also exercise running/walking for less than an hour everyday. I need help, do I have no period because I'm underweight or because I just went off the birth contorl pill? I'd love to be pregnant