I am a virgin, but my boyfriend has had sex before. I am positive that I am ready to have sex with him and we have attempted to do so three times already. The problem is that is causes me excruciating pain. I understand for most girls it causes some pain, but this pain is unbearable and I haven't been able to go through with it. When he fingers me he can fit 3 fingers in so I don't see what the problem is. We take our time and don't just skip right to sex. What should I do?