Can an Overtightened Tummy Tuck be reversed?

I had an extended tummy tuck 18 months ago and the feeling of tightness and pulling has never gone away like I read it should by now. It's extremely uncomfortable and left me hunchbacked because I can't stand straight up as it feels like I don't have enough skin anymore to do so. I also have never regained feeling in my abdomen. It's all made my lower back pain worse as it has to compensate. I have read this is not the norm and want to know what can be done to fix it. Thanks