The time it takes to straighten up after tummy tuck, depends on the amount of skin laxity in the upper abdomen. The looser the skin, the faster it takes to straighten up. On average it takes between 3 to 10 days.
I do not recommend to combine tummy tuck and hysterectomy because of the increased complication rate when combining the two.
Always , consult with experience board certified plastic surgeon who operate in accredited surgery center for your safety. Most importantly, check the before and after pictures in the photo gallery, to make sure that they are numerous, consistent and attractive with flat stomach , nice belly button, tight and youthful skin.
All the best,