Two or three weeks ago I gave my bf a blowjob, I'm pretty sure I have an sti (we were both unaware he had one, and we understand its our faults for being silly enough not to use a condom but now we'll know for next time) and I'm going to get it checked by my gp. I'm a very anxious person though and I'm not exactly sure what to say when I'm booking my appointment. Do I explain why I need the appointment? Do I wait for the receptionist to ask, Or do I just tell my gp when I get to her?