Why the heck aren't you using protection?!!?!? You should have been worried about something like this looong ago... Sounds like you have something that is contagious and pretty serious... As for girls never getting pregnant.. I would just count urself as damn lucky so far. I however feel no pity for you, might think im a health forum but so what.. It's your own fault for not protecting yourself or the girl(s). Go get checked out at a doctor right away.

I totally agree with cherry_pie. What is wrong with you? Why arn't you using protection? You are damn lucky you haven't gotten a girl pregnant. And if you haven't caught an std already then you should be very thankful. Word to the wise, start using protection.

You sound like an illiterate fool. If you caught something you deserve it! I hope your dick shrivels up and falls off. I just hope none of the girls you have been with (although they are just as ignorant for not using protection!) catch the crud from you!

Well, I personally do not wish you to have anything bad! That is just plain ignorant.
You should use protection though. I don't know if you have an infection or not. I only have had sex with circumcised men, so I know nothing of the opposite.
You really need to get tested. If not for you, do it for the girls that you are sleeping with. It isn't cool to run around having unprotected sex. You will end up with something and then you will pass it on.
As for no one getting pregnant yet, that is just luck, I guess. Maybe the girls are on the pill, or not ovulating at the time, or just pure luck. But, do the world a favor and use protection. It doesn't sound like you are serious enough with anyone to be breeding.