I'm 21. I have always noticed my periods have been irregular. I'd go three months without anything happening now I'm noticing that it takes longer. I have gone five months now and still haven't gotten one. When I was on birth control my cycle was normal but now until I stopped taking the pills so I know my body is capable of going through the cycle every month but it doesn't without the pill. What could be wrong? Does this mean I won't be able to have kids in the future?