Best Back Pain Exercises

I live a very sedentary lifestyle and work a very sedentary job. I am also overweight. (Big surprise.)

I have recently started eating healthy and working out in order to try to fix these problems, and because diabetes and heart problems run in my family.

The problem is, when I exercise, it causes strong lower back pain within about 10 minutes.

I tried just taking walks during my breaks and lunch at work, because I thought I might have been overdoing the workouts for someone so out of shape. However, even walking for just 10 minutes causes the back pain.

It seems that my body is so used to sitting (and probably a bad posture) that just standing up for that long is causing the back pain.

I need to exercise in order to get healthy and lose weight, but the back pain is making it very difficult. Is there something else I can do about it? Will it stop hurting as I lose weight?

I’ve stuck with the exercising for about 2 weeks now and the pain hasn’t gone away yet.

Thanks!