:unsure: ok, i have a realy unsteady cycle,,always ahve,,it comes about every 5 weeks but they can come as close as 3 weeks if the last one was light,,well the last one that i had was like june 7th and lasted for my normal 4 days ,, well a week ago i stayed with my boyfriend ,,he lives in anouther state,,and well the enevidable happened,,,and i should have started any where from about two days ago to not for anouther 3 days,,the thing is it isnt unusual for me to skip sometimes, what im wondering is its been 7 days scince i had sex ,,can sperm live that long so as i get pregnant? and if i skip is that prety much a sure sign im pregnant? :unsure: