Everytime me and my fiance have sex and he ejaculates the skin around my vagina breaks out really bad it burns and itches and i have shortness of breath and i feel very lightheaded.. what can i put on my skin to clear it up?

Allergic dermatitis: It sounds like you may be allergic to his semen or sperm. In addition to taking a daily allergy med (Claritin, Allegra, Zyrtec) try putting vaseline on the skin around your vagina to act as a barrier to irritation. Unless you are trying to get pregnant, you should also ask that he wear a condom as this may protect you from the irritation/allergic dermatitis.