Hey buddy, get out and take a mile or 2 walk every second day. Not slow, a more faster pace.
Take up a stretching routine to stretch out unused muscle, like yoga, Pilates....
You have 3 core muscle groups, legs, core, and chest. So exercises (low impact) that stretch or work those muscles out...
Chest: push ups (various ones, should width, farer apart, closer together)
Legs: Walking, stairs (take stairs 2 at time), deep knee bend( and then reach for the sky on toes), knee lifts, jogging on the spot, elbow to opposite knee.
Core: Planks, leg raises (side and front, with variations on both, where you incorporate your hips)
Arms: Stretching, rotations, tricep pull ups, overhead lifts (small 3-10 lb weight).
If you really want to lose the weight off your stomach, diet. Cut sugars (sugar is in everything) and breads and pasta down. Eat more veggies. (try to stay away from the veggies that have more sugars/starches - carrots, peas look for brocoli, cauliflower, peppers, celery, green leaf for salad, (watch the salad dressings for sugars). Home made vegetable soup. Sugar, Starches, Meats( turn into sugars in body), Veggies.
Go out and walk around. If you sit at home, you tend to eat too much. Drink more water. The problem with more water is that you need to piss it out... Stay off the couch and go outside. by staying active your body will burn more calories.
Sweating is good for you. You might not like it.
The thing with diets is you have to meal plan, (set up ahead of time). 3 small meals with snacking material (celery), and try to fast after last meal to the meal the next morning (12 hours ??)
Walk, stretch and watch the diet