Every time you have unprotected sex, you run the risk of getting pregnant, even if he does not ejaculate. Pre-*** also contains traces of semen which can get you pregnant, a very slim chance but it can still happen. The fact that you had sex on the second day of your period makes the chances even slimmer. I really don't think you have anything to worry about!
Unless your period is late, I wouldn't worry. But I suspect it will be right on time. If it is late though, do a pregnancy test.
At the end of the game.. The king and the pawn go into the same box.