I need to see a doctor. I haven't had my period in 3 months, and it's been almost a year since I've had one that actually needs a pad and lasts more than a day. I'm constantly tired, I don't feel hungry, and I see black spots in my vision. I gained 60 lbs last year because of birth control and lost 20 lbs in 2 months after stopping it, but now my body doesn't function correctly. I'm scared to tell anyone, but I am getting worried. Maybe it's selfish of me to be okay with no period because I'm losing weight.