Hi I have a question.. when could I know for sure that I am pregnant or not? Two months ago my boy friend fingered me and there was the slightest chance that he may of had precum on his fingers. My boy friend didn t even ejaculate. Last Month my period was four days late, so naturally I panicked and went to the doctors, who was convinced that I wasn t pregnant. Neverless, she did a test it came back negative (I would of been three weeks then) she said it would of showed up by then If I was. I relaxed a little, and the following day my period came as heavy as ever and It lasted for six days, pretty normal. I haven t had any sexual contact since then. Now this month I am late my period it s not come. Frantically I panicked as my friend said it was possible to get a period and still be pregnant. So I took a test again in the morning, it came back negative, so I waited another two days (still no period) and it came back negative again (I would be around seven weeks now if I was) When can I be certain I m not pregnant? Please could you help me, as I d really like to put it to rest now. It s effected mentally, and I haven t been sleeping. Thank you :)