I currently have amenorrhea. I am 16 years old, almost 5'5", and around 115-116 pounds. At one time, I reached a weight of around 147 pounds and then began to rapidly lose weight over a period of 5 months, sometimes not using the healthiest methods. I don't think I had developed an ED, but my caloric intake was too low. After reaching a low of 112-113 pounds, I increased my caloric intake and I hope to gain some more. I get enough protein (50-60 g per day), enough calcium (1300 mg or more per day) and I have significantly increased my fat intake, although I should probably increase it more. I have not ruled out other causes for my amenorrhea. Plus, I was an active tennis player, but now that I'm on off-season, I'm pretty much sedentary. When, at what weight, do you think my period should return?