I havent had a real period for about a year now. i contacted my local gyno and they put me on some kind of medicine to force me to have a period, this was back in january. it worked but i still havent had a period since. whats wrong?

Irregular menstrual periods are common. The fluctuations of estrogen and progesterone can be easily affected by stress, weight gain/loss, exercise, lack of sleep, thyroid problems, and uterine/ovarian issues. Since you responded appropriately to the Progesterone challenge and are able to menstruate, you might want to consider starting hormonal supplementation. Talk to your Gyn Dr.