I've read some of the other thread with the somewhat related problem but I didn't find any information useful.

I'm having a problem lasting when doing any sexual with my girlfriend, I'll probably only last like 1-2 minutes. I've tried a lot of the common things like masturbating before hand and I've tried special performance condoms but those only work 25% of the time.I've heard people say just practice more and it will get better but, I have been having sex consistently for about 4 months now and it hasn't really gotten better. Is there like a type of pill I can get from the doctor or something like that, that can help?