18 weeks pregnant with my fourth baby and experiencing burning and pain in the vaginal opening from lesions and dealing with a low grade fever, diahrea, and fatigue.So i have the above symptoms and went to my doc since I thought I had either a UTI or yeast infection( I have a history of both while pregnant) They ruled out both and are having me tested for herpes? I have only had sex with my husband of 8 years, we were virgins when we married and I am confident he has not been unfaithful to me! We are devout christians. I am so confused; my doctor acts like this is the only possible explanation. As a side note;we have not had oral sex in the last 30 days so it could not be from a cold sore, etc. Does anyone know of other possible explanations aside from an STD?