calves& shin on fire!

I figured I'd start running, jogging, walking since I'm weighing 148 with height of 5"3.
After I haf my son almost 3 years ago I've always had burning in my calves whether it'd be from walking around the mall. Standing at my old job for 10hrs. Every one told me it's bc I didn't exercise! So June 17 I started hip hop abs, legs still on fire! I started to walk and jogg about a week ago to build my muscles. I do intervals though to get more out of it. Well yesterday my calves were burning so were my shins. I figured i had shin splints so i just slowly jog my 2miles figured what the heck. Went for a mile walk afterwards. Still on fire. I stretch, I have good shoes, what is it. Cause my legs hurt no matter if I just do normal things or exercise. I have a doctor's August 7. Untill thrn any ideas?