Hi, I havan t had period for last two months to be exact. I am 21 and half years old, and I never had sex in my life. I always used to have periods on time. I do take medication, levothyroxine for my hypothyroid hormonal problem. I am taking it for a year n half or so, but never had this problem. Can you please suggest me if I need to worry about this. Plus I heard from somewhere that with enough exercise, one wont need thyroid medicine in-take. Is it true? I have been gaining a lot of weight since my hormonal problem. Is there any solution except medicine.