I almost always have protected sex, but a few weeks ago my SO and I had unprotected sex for maybe 1 minute, and he did not ejaculate, but he there was pre cum on his penis. My periods are not always on time, but normally only off by a day or two, and here I am 5 days late...... We do not want to have a child right now, but will gladly step up and have one if that's what's happening. I am just super stressed about it...... I took a test 2 days ago, and it came back negative. How quickly would you think I should test again. I have no signs of pregnancy, but also no signs of my period.