My boyfriend I been with for about 2weeks now

L
Me and him had sex for the first time he wanted to 2days ago but I kept saying no but than today came and he was just going to rub his D on my P and he put it ik for a fact he meant to so I gave up with saying no at that point and after all the fun he was ready to cum and he pulled out at a wrong time and I'm a 100% he got cum in me like I he was still cumming when It was out he claims he didn't get any in me but I'm scared