Since you had sex in November 2011 and had normal periods in December and January, it is doubtful that you are pregnant. Sometimes, outside factors can alter your menstrual cycle. Things such as stress, illness, medications, changes in diet, exercise or sleep can all cause changes in your period. They may make your period come early, late or not at all. It is not uncommon for some women to skip a period now and then.
Give your body another month and your periods should return as usual. If it doesn’t, follow-up with your ob/gyn doctor or clinic.
6. February 2012
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