Me and my BF we have sex 3-4 times a day, I wonder if is correctn or is too much?

It's not too much if you guys still talk, and he respects you and loves you. If he doesn't show that he cares about you, or respects you than I would consider leaving because he could be using you. Other than that, sex is normal and when me and my boyfriend first started dating we were the same way! No worries!