Youe body your choice.
All I will say is that I fell pregnant in my early 20s, and my decision about what to do was very naively influenced by the idea of the "baby" (despite facing lone parenthood).
But the thing is, they're not babies for very long.
They are toddlers, then there's primary school age, and then before you know it you're responsible for a teenager (have you seen Adolescence?)
When they hit 18 the responsibility doesn't magically disappear.
There are so many other things to consider outside of "baby", such as where you will live long term? If you have a boy do you have a support network of male role models for him to take the place of his father?
Eg. Would there be room for your child to have their own bedroom at your parents place? Is your parents place in a good school catchment area for primary and secondary?
Apologies if you've considered this sort of stuff, but I certainly hadn't.
Mine is now an adult, but lone parenting was hard (on both of us) even with supportive family, and it isn't what I would have chosen if I'd really thought things through.
Don't let anyone pressure you into a decision, the choice is entirely yours to make.