Why sex is being painful? HELP ASAP!

I haven't had actual sex yet, but my boyfriend regularly fingers me and gives me oral which feels great and I reach orgasm every time. The other day we decided that it was time to have sex, after fingering me and going down on me, he slowly put it his penis but it felt very painful on the edges of the vagina (the very opening) he had barely put it in and I couldn't take the pain it felt like a paper cut in away its hard to explain but all I can say is it was painful, now why does this happen? Shouldn't I be stretched out by now? Besides he usually uses 2 fingers and goes fast so why is it painful with penis?

I'm not sure. That's not really normal. (Sorry if this isn't soon enough) Maybe try again, and if it's still the same go to the doctor. There really isn't any other way to tell what's going on.

generally speaking, the painful sex can be caused by the following reasons:
- Not sufficient vaginal lubrication
- Vaginismus.
- Vaginal infections.
- Problems with the cervix
- Problems with the uterus.
- Problems with the ovaries.
- Endometriosis.
- Pelvic inflammatory disease（PID）.
- Sexually transmitted diseases.
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Is his penis skin rough or dry? Because this can irritate your vagina bigtime. What you want to do is get him to use one of those penis health cremes that are on the market nowadays. Get one that contains Vitamin E and shea butter and his penis skin will be nice and smooth and you will be able to enjoy intercourse. Hope this helps.