If your goal is to get generally healthy, exercise is brilliant. Don’t be afraid to walk on your runs at first to allow you to recover and keep running.
If your goal is to lose weight, diet control is the most important thing. Exercise can actually make things worse if you aren’t careful, because your body will instinctively want to eat more. You’ll probably need to make sure that you don’t eat more kilojoules after starting exercise than you already eat now. But also as the other reply said, cut your carbs, add more protein (necessary to help your body repair itself after the damage that exercise causes) and veggies. Lots of leafy greens especially.
And what carbs you are eating would be better as whole meal and/or multigrain, rather than white bread/rice and plain pasta.