During intercourse, the walls of my vagina burn as he enters me (we do use lubrication, no condom, married). I am 50 years old and have gone thru menopause (no children). and after ejaculation, his sperm also burns my vagina. I used Monistat yesterday thinking it is a yeast infection. I do use baby wipes before and after sex. I am thinking those may be the culprit???