no it won't cure trich.
give the clinic a call and let them know you have vaginitis symptoms and need seen today or tomorrow. get properly tested and get better answers.
odds are your bf hasn't had proper std testing done. most folks don't get it done but say that they do. definitely time to have a talk with him about std's in general and testing. if he says he gets tested, ask him to get a copy of his last test results and you also provide a copy of yours too so you can both be sure you are getting properly tested. odds are neither of you have been tested for herpes either.
grace
I'm no expert, but.. I'd just like to say that you shouldn't view confronting your boyfriend about your concerns as an accusation. If anything, you should show him the sign of respect to say "Hey, we should go get tested." that way, if he is infected he can get it cleared up ASAP.
Is there a chance for re-infection?