In a dilemma... should I stay or should I go?

Me and my fiancé found out we’re pregnant recently. Before we found out we decided to move back down to Florida (we lived there for 6 month last year) but since finding out I’m not sure whether I’d like to stay here (where my mom is) or go to Florida. He has it set in stone we’re going down. He thinks it’s the best option he wants to start a business down there and stuff. I’m worried because this is my first pregnancy, I’m young and I still need my mom and I definitely need someone. Also things are more expensive in Florida like housing etc. and I really don’t want to be staying with his family with a baby. I make good money here and I know I’ll have no problem finding a job but with being pregnant I’m worried, he’s had trouble getting a job up here and hasn’t been working in awhile. Every time I do try and talk about it with him he gets very frustrated and we end up fighting. I just don’t know what to do I need advice.