I've been trying to have sex, for the past months, but there is something that doesn't let me, it's like right in the moment when he is about to penetrate me, it hurts a lot, and i can't keep on going. It hurts too much. And we let pass some minutes and when I'm in the mood again, we try again but again it hurts. Even though i have talked to my partner about this. I feel bad!

Sweetie, it may be that this is something you're just not ready for. The first few times I tried, my body closed up so tight my bf couldn't even get a finger in without it hurting me (which had never been a problem before I decided to let him go all the way). Even though I thought I wanted it, I think there was a part of me that knew I wasn't ready.

I'm sure fear played a part in my difficulties, and perhaps it does in yours as well. In my case, I had a bf who was patient with me, and I was able to please him in other ways. One night a few months later, everything just came together (so to speak), and he was able to penetrate me. I had some slight discomfort at first, but I was able to relax my vagina and he pushed up inside me. After the first time, it got a lot easier and I really started enjoying it.

The main thing for you to remember is not to feel bad about it. You are the only one who can decide when you are ready. Wanting to please your boyfriend doesn't mean you're ready. Consider the fact that sex takes your relationship to a whole new level, one for which neither you nor your boyfriend may be ready. I don't know if this helps at all, but I hope so. Remember to be safe.

may be your hymen(a layer inside the vagina) is too thick.
u better consult doctor.

Is his size thick? It is normal to hurt for the first couple of times especially he is very thick.