Painful

I'm not a virgin, that's clear. I've had sex with my boyfriend, clearly. But after about 3 weeks of no sex we go at it and I am in pain throughout the whole thing. I didn't let him know it hurt during it because he cares about me being pleasured. I faked the good feelings. It hurt for a few hours still after too. Why? Why is it like this for me? The second time after 3 weeks it only hurt during the beginning but good after a minute or so. Why would I feel pain at all? We've been having sex for about 4 months now, it makes no sense to me!

The problem was my sex drive. I had almost none. I've been looking into it and so has my boyfriend. We've figured out that it's my antidepressants. My therapist was the first to mention it. I didn't make much of it but I really do want a healthy sex drive, to enjoy being with my lover in bed. We looked it up online for side effects. It's there. Decreased Sex Drive. So that's what I'm going to work on now. I love him and adore him too much to know that there's a problem between us causing us. And I also know I'm healthy down there too. He helped me research and now I understand.
Now that I know what's causing the problem I can figure out how to fix it.

Yes probably def the anti-depressants. They definately lowered my sex drive but i'm a borderline Nymphomaniac so wasnt neccessarily a bad thing for me!