can i get a somthing from all of the sperm insid of me
Well, most likely if your boyfriend is ejaculating inside of you with no condom or birth control of any kind, you'll get pregnant at some point. If you're trying to conceive and you're worried about you or your boyfriend's fertility, talk to your doctor.
The sperm will not hurt you. However having unprotected sex you could get a disease and you will eventually get pregnant. It is only a matter of time.