So I have been on the deprovera shot for over five years and recently took myself off. My shot was due in November and I decided to not take it anymore. Well I'm stupid and I ended up having unprotected sex and my period still has not come and honestly I have not had a period for about five years so I'm not sure if that is irregular or not, and I also am not sure if I could be pregnant or not since my menstrual cycle has yet to come.