Hi, I have not had a period since the end of September, I havent thought any of it because my periods have always been irregular but its going into the third month of not having a period. This summer I was had a blood test for high levels of testosterone which came out negative. Also, just recently (since september) I have begun smoking heavily which I know could also affect my cycle. I just wanted to know if I am pregnant or is my recent smoking the cause of my missing a period for such a long period of time. Thank you for your time.