Everytime ive had sex it hurts, ive been too the doctors and they have tested me for utis and stis(which i dont have) i am also fully in the mood when having sex, than my vagina burns and swells once my partner finishes?

Possibilities include yeast infection, with symptoms triggered by friction during sex; chemical irritation or allergy if you use vaginal hygiene products, perfumes, or spermicide; latex allergy if condoms are in use; and others. Extremely rarely, women may be allergic to a partner's semen. Keep working with your doctor, starting with testing for yeast, and also try anti yeast treatment. Good luck.