Is it possible for a doctor to know how long you've had an infection or STD? I've had awful thick chunky discharge and a weird smell coming from my vagina for at least a year and a half, but due to bad sex ed I thought it was normal. I also have a really bad cramping sensation when I pee (kinda like in the area behind my clit). I'm worried about going to the doctor because I feel dumb. Will they be able to tell that I've let this go on for so long?