Help a first time mommy out please!

Emily
I am 19 weeks pregnant and I feel great, but in the beginning of my pregnancy I was STARVING all the time, and now I feel like my appetite is much less. I still get hungry and eat 3 meals, but I look less bloated in my belly and I'm just wondering if I should be concerned. Like I said, I still get hungry but not like how I was. Help!! Has anyone else experienced this?