First of all, I'm so sorry you are struggling. Know that you are not alone and that many folks experience some wonderful things after WLS as well as some more difficult things. That is just part of the process; its definitely not always sunshine and roses.
1- Constipation is VERY common. Are you taking an iron supplement? They are notorious for exacerbating constipation. If you're taking any additional iron, it may be worth getting your labs checked - if they are normal, maybe you can drop that? Another option would be to add a prebiotic fiber supplement. I take about 15g of Just Better Fiber daily and it is a HUGE help. Make sure you are well hydrated, especially when taking laxatives, stool softeners, etc. Lastly, are you getting in any fiber in your food? This goes with #2....
2- The return of hunger is normal and expected. Your body is doing EXACTLY what its supposed to do. It may be helpful to start introducing more fruits & veggies, which will help you feel fuller longer and help with constipation. Also, are you hitting your protein goals? If not, definitely focus on getting that protein in. If you're hitting your goals, adding in nutrient rich fruits & veggies, and STILL feeling uncontrollably hungry, then it may be time to consult with a bariatric dietitian. Hunger is normal, feeling miserable is not.
3- I think a LOT of us struggle with body image before and after surgery. There is a trade off that happens - we lose the weight and are healthy, but it can make the physical effects of a lifetime obesity more obvious to us. Therapy therapy therapy. I can't encourage it strongly enough. Learning to cope with those feelings, learning to be kind to our new bodies, learning to love ourselves well, THAT is the hard work of weight loss and it is truly a lifelong process. Get help, and keep getting help. Outside of that - buy clothes that make you feel good, as much as you can focus on what you LIKE about your body instead of what you don't, if its practical for you, you can always look into plastic surgery, and of course, you could just refrain from looking in the mirror naked. I know, easier said than done, but if its causing your harm emotionally, then maybe hold off for now.
You aren't alone and you aren't crazy. WLS is hard work and there is a lot that comes with it that doesn't get talked about much. We are rooting for you.