Help please!

So my boyfriend and I have been dating for about 3-4 months and he decided that he wants a baby now and I do too. But I'm 14 and he's 15. He says he's ready to drop out of school for the baby and get a job and everything but I'm just scared about it. Like what if he doesn't want to be there after the baby is born and I have to take care of the baby all by myself? I'm just asking for a little bit of advice please.