since you had unprotected sex, you need to cover your bases with appropriate testing at the proper times. you also should be seen tuesday for your current symptoms too.
you can test for chlamydia, gonorrhea , trich and ngu anytime after 1 week post encounter. syphilis after 6 weeks. herpes, hiv and hepatitis after 3 months.
grace
Are you a female and did you have anal sex?