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Well, describing it as a 'burning' sensation immediately brings to mind STI's. I obviously don't know either you or your boyfriend, but you could consider that a possibility. Although, if you have a poor diet it could just be a urinary tract infection, which apparently causes sex to be painful.

Definitely see your gynocologist- sounds like you could have some kind of inflammatory pelvic problem or something. If you guys are using condoms, you might also want to check for a latex sensitivity. Your doctor'll know.

The going off your antidepressants probably won't cause pain, but it's not unusual for seratonin levels to determine drive, or cause feelings of unexplained saddness during sex. You might want to mention that to your doctor, too.

Girl, GO SEE YOUR GYN!!!! It is not normal for sex to hurt! I've heard of it happening when a psychotropic is started, but not when it's DC'd. If I were you, I would get tested for STD's and insist that my boyfriend does too!!! On the off chance that you do have something, it's better to n** it in the bud, so to speak... Sorry you're going through this and good luck to you. Also, sorry if it's weird for me to be answering this as we've never spoken before.

Since it isn't the matter of dry sex, I really can't think of any other reason except for something that needs some medication to help.

Maybe there's some sort of irritation inside, yes?
It really also depends on how often you do it and in what manner, but we really can't get into that here.

Best thing would be seeing the gyno. 3nodding

First of all, you didn`t gave much information, but I`ll try to give you some possibilities. Where does it hurt? Outside, inside, or at the botton? It hurts when you do sex with or without condoms or either way? did your fluids changed collor (white, yellow, green)? Does it smell? Does your boyfriend know that you are in pain?

That can have 2 directions:

STD (more probable, due to the picture you described) - Those things are more troublesome and painful to women... it is said, but true. We suffer a lot more in life... crying
You can have "candidiasis". Don`t worry, it can be fixed, but you AND your boyfriend will have to go under some medication. That happens from many ways, for exemple, durty water. The fact that he had more sexual partners in life isn`t a problem, but can be a reason to your infection. Is your boyfriend circuncized? I mean, because boys that aren`t have a lot more chance to devellop STDs. And some of them they won`t even notice that need treatment. It isn`t just to keep his 'junior' clean, but well dryed after shower. ALL OF IT!
Sex without protection, can be a reason for your infection, and once you are infected, you both can be reinfected if you don't do it toghether at the same time.
Go to your gynocologist, she/he can explain better, AND GO WITH your boyfriend, talk to him that you want his companion, he can`t refuse if you ask kindly... ^^ And drink much water. The majority of the urinay infections can be avoided by drinking lots of water.

The second direction: Maybe you are horny, but not horny enouth yet, see? Maybe it isn`t "the moment" yet. Maybe it is the condom. try change the laboratory. There is one that no matter how moist I am, the momment that it gets on me, I get dryed.

I don`t think that your anti-depressive could be the reason for you to be in pain.... Anyway, talk about that with your doctor.

Good look with your problem.

Just thought I'd post this to bring the thread back to the attention of the OP. I was just wondering if you've sorted your problem out. Is everything alright down there?