Masturbastion Issues

This is a very weird topic and I'm sorry, but I am having extreme trouble when it comes to masturbation. Mind you, I'm 15, but a lot of girls my age are getting off on that and I'm really worried because every time I try clitoral stimulation, I have to stop because it will feel weird, like, it's a good feeling sensation, but it's too much. Is it because I'm sensitive to that? Should I get checked by an OBGYN?