Hello, I like to know, how long would I ovulate. Can I get pregnant when I'm starting to ovulate? I had sex one day that I ws supposed to start ovulating, since sperm last two to three days, is possible I can get pregnant. I calulated the days I could be ovulating, if Iwere to have sex those days are around those days, do I have a chance of getting pregnant. Again since sperm last two to three days, are my chances high.