i was bored and stupid 2 months ago, but i had oral sex, and ever since i

[Ben B]

was worried that i got stds..? or hiv. i didn't get any kind of sores down below. but i did get a flu. and it spread to my parents. but this flu really scared me cause i know its one of the symptoms of HIV. but i went to a medical study and like all studies they test your blood first before you can particpate. and they called back and said everything was fine and i was ok to go on with the study. does this mean i don't have and kinds of STDs or HIV? they said they would check for that too. cause if i had it i couldn't continue. i just really worried. its making my blood pressure rise. so am i safe now?
one thing also, is it harder to get HIV by having someone give you oral sex. i wasn't doing it i was getting done to me. cause i don't seem to have any kind of herpes sores or anything like that.