hi dr, i had sex with 6 months ago, with a girl i dint know really well, and after a few times i dint use a condom, for a couple of times, i have had a girl friend after her as well, i have not had sex for the last 5 months, but i recently got to know that the girl i has sex with 6 months back has STD , i am really scared if i have infected my girl friend as well. what r the tests i need to do. i have not had any pain or any abnormality till . guess a dr will know better, could u plz suggest the tests i need to do?