Ok first off id like to start off by saying my last months cycle felt a little off it wasnt as heavy as normal and only last 2 days that being said ive always had pretty normal cycles to the point where i knew when my period would come and what days i would ovulate well along with the shorter then normal cycle i also couldnt tell if i had ovulated for that month and my boyfriend and i had sex 4 days prior to when my period was due and now i am 3 days late and any other month my periods were on time. Could i be pregnant?