1. It doesn't go to your ovary, EVER it goes into your vagina, then your cervix then your uterus, where is stays. The egg comes from your ovary down fallopian tubes to your uterus. 2. There is always pre cum. A guy cannot feel this therefore he cannot pull out before it happens. There are sperm in pre cum. So you have a chance at being pregnant. You will not know for sure for at the very least a week though. The hormone that shows pregnancy needs time to build up in your system. Unless you are trying to get pregnant always use both birth control and a condom, you still have a chance at pregnancy it is just a lot smaller.