before i say my question. i would just like to say that my doctor prescribe me omeprazole and as you may or may not know, omeprazole has a lot of side effects including headaches and diarrhea... so now to the details of the question, me and my girlfriend had sex about three and a half weeks ago to be exact, for the first time. i used protection in the intercourse but she didn't used protection when she gave me oral. so i been paranoid because today i feel headaches and that feeling of getting a cold. so my question is, is this because of the omeprazole or should i get checked for std?(which i will soon, anyway)