You don’t mention whether or not your partner is on a long term birth control method (pills, shot, ring, etc.). Women on the DepoProvera injection usually do not have periods. If she does not have periods because she has a irregular cycle, then her ovulation times will be irregular also.
Anytime you have unprotected sex or a condom failure, there is the risk of pregnancy. If this occurred recently, Plan B is an option. Plan B helps prevent pregnancy by delaying ovulation. It is available for purchase over the counter to women age 17 and older. Women under 17 require a prescription. It costs about $46.
15. February 2012
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