Having a hard time with body image..

Lauren
This is my first pregnancy and I'm seriously struggling with my body changing. I've always been really thin, but I'm 15+4 and already have a little belly. I haven't really gained any weight, but I'm having a hard time. 
I'm in that awkward phase still where if you didn't know I was pregnant you would just think I was getting chubby. As soon as I start feeling ok about it, somebody makes a rude comment and sends me back 20 steps. I know it's so worth it and it's beautiful, but I'm not emotionally prepared for people calling me fat.. 
How do you ladies get through this?