According to Glow I have a 33% chance on the 18th to become pregnant..is that the day BEFORE my actual ovulation day? On the 12th my SO and I were together and I am afriad of possible pre-ejaculate coming in contact with me. His penis TIP and only the TIP was inside of my vagina for no more than a few seconds. He DID urinate before any of this. Is there a chance there WAS sperm in his pre-ejaculate and then it could have survived until my ovulation day? When even is my ovulation day?! UGH!!