How likely is it that a girl to get pregnant from sex without a condom?

vary vary likely If you are using no Birth Control at all, you might as well be trying to get pregnant. So, add to that the time of month, how close you are to ovulation, and how fertile the both of you are, and you have your answer. There is a great chance of getting pregnant, yes, but let's say your egg has already fallen into the fallopian tube, and passed the place where it needs to be to get fertilized; so no worries. The idea is to try and prevent the possibility of egg and sprerm connecting.