I’ve been there and done it. My eldest DC is now 21. We’ve been married 18 years and have other children.
I adore my children, and wouldn’t change any of it.
Would I advise it… probably not.
Overall I’m very happy with my life and content… but I absolutely did not achieve my potential. I was fairly academic, went to a high achieving private school. I didn’t really know what I wanted to do career wise, but there were a lot of doors that could have opened for me.
I took time out to be at home and then my DH’s career always came first because he was a few years ahead of me educationally/ then in terms of job progression/career prospects and earning ability.
I did end up with a degree and a masters but I’ve not used them to their full potential because I’ve always been multiple steps behind so as a family it made sense for me to be the one to be around for kids.
Unlike most (not all but most) of the young parents I met when DS was small we are still together, and a solid couple and a great team. But it was bloody hard work sometimes.
If you go ahead, do not give up your education/career unless you are married (and ideally not at all!).
If my DC/any young person I knew was in my situation at 17/18, and asked for my opinion I would say abort unless you were desperately against it. It’s possible to make a success of it and be happy long term, but the odds are stacked against you.