hello doctor. i m 18 years old. I had sex with my boyfriend few days ago. When i am on my way home i feel discomfort. Finally, when i m home and about to sleep i had a fever and pain on my lower back. i went to our family doctor and he told me that i have a urinary tract infection. I have an irritation in vagina. It is so itchy and i have a watery discharge but has no odor.