I agree with kari, having a baby isnt all fun and games. Theres a lot more to think about then just that their cute and you want one. Babies cost a lot of money.
So you plan on going to college? If you have a baby now then that will become more difficult.
If this is realy something you want to do then no ones gonna tell you not too. But honestly, you need to really really think about it. Think about everything. The good things and the bad things. Because once you have a baby, theres no turning back.