Pregnant and Overweight

So I'm (24) 5'3 and 210 lbs, and most of my weight is in my belly area. I've been making myself upset all day because I realized that I won't get to notice the subtle changes in my belly as the baby grows (I'm only 4-5 weeks). I honestly felt huge pre-pregnancy and I really wanted to get into better shape before getting pregnant. I guess my question is would it be okay to keep going to the gym/ start going more often? I feel like I'm going to be very large later in my pregnancy and I already have really bad body image issues so I'm just scared. I have a binge eating disorder that I'm trying to control which has definitely contributed to my weight. That and over consumption of alcohol (which I have stopped doing, obviously).