I feel like my bump is too big :/

I'm 17 weeks, and feel like my bump is too big and I'm gaining too much weight! I went to immediate care yesterday for a severe uti and I have gained 12 pounds since I got pregnant! Is this too much? Is it normal?

Please don't judge, I'm trying really hard to remain optimist and positive. I've struggled with body image issues for YEARS. Before I got pregnant I was slim and I haven't changed my eating habits or anything. It scared the crap out of me when I saw the number on the scale since I've NEVER seen a number that high before. My boobs have gone up almost a cup and half size, and I have a belly as you can see.. but baby is only 5 inches so why is my bump so big!?!