What should I expect with my first pregnancy as a plus size woman?

I unexpectedly got pregnant, I'm 19 currently 337 lb, I have been trying to lose weight before I got pregnant I lost about 200 lb but now I don't know if I should continue trying to lose weight or not, I am worried I do want to keep the baby even though it was not planned, I just really want to know what I should expect and what I should do, I'm taking a prenatal right now and I'm going to start taking one baby aspirin a day as well, I have a prenatal appointment the 9th of June