Any advice for losing weight gained during chemo?

I (F20) have 1 more round of chemo until I’m done and am trying to get back into the swing of things. I gained about 10 pounds during chemo and it’s really depressing me. I’ve always been a petite person- 5’0, 115 lbs- but now I’m at 125 which is the heaviest I’ve ever been. My body image has never been this low. I know that chemo tends to degrade muscle and makes fat more noticeable but I still get really sad when I look in the mirror. All of my definition is just gone! I’m worried that I won’t be able to get my old body back and chemo has messed up my metabolism forever. Does anyone have any experience with trying to lose chemo weight? Any advice is appreciated!