Overwhelming Choices

So this may sound all over the place I’m super overwhelmed by everything and need advice from others even though everything is my choice it’ll be nice to hear advice. So I recently found out I was pregnant day before valentines and things seem to be rocky. I’m stuck between being really excited for this pregnancy but then scared and worried because of the guy it’s with only because we had a rocky relationship and he’s not the best guy personality wise but financially great. I’m scared that he will give me a hard time eventually if I want to date again because “he don’t want anyone else raising his child nor do he want to see me with anyone else.” Then I’m also trying to consider my mom feelings cause she’s like against the baby by him all together she even offered to pay for an abortion. Today I got an ultrasound and I fell in love even tho it’s at 6 weeks & 6 days I’m trying to think positive and just have the baby because I want to but idk someone please give advice.

Also I already have a 4 year old and I’m 20.