I have a very sore vagina it is bright red and its very sore when i wipe after going for a wee. it doesn't sting or itch just red and sore. what could?

Several things: This problem can only be solved by seeing your doctor and being evaluated face-to-face. After a thorough examination, your doctor should be able to tell you what's wrong and what to do about it.

Yeast infection: Yeast infections (not contagious) cause high degrees of inflammation. Can occur after taking antibiotics and treated with a pill and/or cream. Other causes: bacterial vaginosis (not an std), stds-herpes, gonorrhea, chlamydia, trichomonas; allergies to cream, soaps, condoms, spermicide, even semen; trauma, vigorous sex. You need an exam and testing for accurate diagnosis and treatment.