Vermatitis
Can you get pregnant your first time? I've heard different things.
People have this weird notion of the first time. They seem to think that it has this magical protective aura and that nothing bad can happen.
YES! You can get pregnant the first time you have sex. There is absolutly nothing biologically special about the first time. Nature does not give virgins one-time-use condoms that protect them.
And frankly, I'm really scared that you'd even think something like this was possible. I honestly hope that you are not sexually active and will not be for a good many years.
As to the OP, that was extremely careless of you. This is your body. This is your LIFE. Why are you being so irresponsible with it? Remember, you only get one. You can't return it if it doesn't work anymore.
Taking care of yourself should be your number one priority. A few moments of physical pleasure are not worth all the possible consequences of unprotected sex. I honestly hope that you learn from this and never EVER make the same mistake again.
Also, you should start seeing a gynocologist at least once a year as soon as you become sexually active. Book your appointment soon.