I bleed only during sexual intercourse. ive had an ultrasound, blood test and pap smear and all were normal and negative. i also had meds to clean out uterus. intercourse is never painful or forced. should i see a different doctor?

Bleeding after sex can be from inflammation of the cervix (cervicitis). Presumably you had a pelvic exam with visualization of the cervix, and STD testing (especially gonorrhea and chlamydia, possible causes in women at risk for STD). "Meds to clean out uterus" suggests infection was suspected (?). Keep working with your doctor; it should be possible to learn the cause of the bleeding.