Diabetes w/ Pregnancy

My last pregnancy I found out I had type 2 diabetes. My whole pregnancy was stressful and diet controlled so I didn’t have to take insulin or pills. I gained a lot of weight weighing at 245 by the end of 9months. 7 months later I am pregnant again (about 6 weeks) and I’m not aware of what will happen this time around or if I’m the only one going through this. I’m scared to gain a lot of weight as I am 220lbs and terrified to have to take insulin.

Has anyone been through this or is currently going through this?