Okay I have heard a lot of people say your most fertile after your period. I don't know so here I am. I had my period about 2 weeks ago. I had protected sex yesterday morning and he did ejaculate then. Right after he asked if we could try it with out a condom, so we did. He didn't ejaculate in me, he pulled out, but I heard that if he ejaculated before an he didn't urinate after or anything that there could be sperm left over. So what's the chance that I could get pregnant from this? If so, how long after this does implantation occur?

Anytime you have sex you risk pregnancy. It is even possible to get pregnant while on your period.

Implantation occurs approximately a week after the "deed." It takes 3-4 days for the sperm to reach the egg, then another 3-4 days for the fertilized egg to travel down to the uterus where it implants.

The issue with 'pull out" is it merely lessons the amount of sperm, there is plenty of sperm in the early fluids that carry sperm

women and men who use the "pull out" are normally called parents

And even using forms of birth control there is always a chance