 [ Symptoms ] bleeding after sex  i have been on birth control pills faithfully for over 2 months i have had some breakthrough bleeding because i skipped my periods on purpose i have never quit taking my active pills everyday at the same time the other night my boyfriend came in me i am still having breakthrough bleeding so this means i am in the clear of being pregnant right [ Disease ] a pet scan is not considered dangerous but discuss any concerns with your doctor urologist or the radiologist doing the test