I started my period exactly 1 year ago. For the first 9 months everything was fine. I had a normal flow and nothing seemed to be wrong. Then i missed one month, then the next month i started again it was really light and brown, not red like it usally was, i thought it would be better the next month, but then again it was really light and brownish. It smells a little bit, but not that much. I'm concerned and don't know whats wrong! what should i do?