18 and pregnant..

So I've been thinking about this for quite a while and I've been thinking about having a baby with my boyfriend. Yes I'm 18 and my boyfriend is 22.  We have been thinking for awhile but i don't know if I'm mentally ready for a baby because of stress in my life. But I always talk to him about having a kid and we do want a kid. Yes I still want to go to college but that'll be in the spring time and I'm working while he is currently looking for a job, so we're not financially stable either.. Can I get any advice please ive been thinking about this way too long.