Sex, weight & marriage

I'm 19 and got married a year ago in July. After I got married me and my husband both gained a little weight. I got on birth control and quit smoking and ate a little more comfortably and I BALOONED OUT. I've had really bad body issues my whole life so I went into a deep depression about it. I ended up gaining 40 lbs total, putting me at 240!!! I've never ever been this big... Nothing made me happy for a long time. I didn't wanna do anything. All I could focus on was how gross I got. I had no sex drive. The past few months I've been back in the gym and eating healthy, But ive been so busy I haven't been consistent. I'm not as depressed as I was at all and I've gotten more physical but I cannot shake this image of myself. When I look in the mirror I don't see myself the way others do, i feel like I'm 600 lbs!!!  My husband doesn't care about my weight, he acts the same as when we dated but I feel gross 24/7.. help??? I don't wanna be this size forever 😩 or atleast feel this way anymore. Is this normal??