My period is three days late. Im on Sronyx because and have been for a long time. I used to due the three month cycle and have a period after 3 months but now that I'm in a committed relationship we are having sex without condoms the last month. Ive already had to regular monthly periods jan and feb. I should have started my period 3 days ago. Im wondering if its just the change in going from 3 months to an every month period. I started my pack of pills march 16 and should have started my period April 6th. Im wondering if I'm pregnant?