What Causes Vaginal Pain?

Hi. Before I start describing my problem, I will mention a few things about myself. I am a 24 year old girl. I am still a virgin, but have a boyfriend. I am on birth control, in order to control my days better - I have polycystic. The thing is I do not enjoy masturbation - it does not get me off. The reason for it is mostly the pain that I feel in my small labia (a specific point there that last hurt half a year ago and started again recently), which makes me stop touching myself, as not to hurt myself. That is also the reason why I have to stop my partner whenever he tries to touch me down there. I never experienced orgasm, because I can simply never relax. I do not know whether it is just in my head or I am seriously sick.. I have no problems getting wet, but sometimes it really hurts in the vaginal area when I get sexually aroused. I have already spoken to a few gynecologists about my issues, but they said I was completely healthy and just need to relax. I do not know who else I can talk to about my issues. Hope you can help! Thanks in advance. Emma.