David,
I totally get it. Like you, once the door opens an inch, I want to take a mile. So, I tend to overdo it also. The beauty is that your hip will be your guide. It will tell you when its had enough and you will have to listen to it. When the hip says that its had enough, take some days off until the pain subsides. Then get back on to the horse and try again. Eventually, you’ll be back. I should warn you though that I didn’t start attempting to run until after the third month. Even then, it felt COMPLETELY awkward. I finally started feeling good at about a year and half. Good Luck!