How Fast?

I am 3 1/2 weeks out, and started at a gym this week, my question is how fast do you go on the treadmill? yereterday and today i went 3 mph for 20 min and an incline of 1, which equaled 1 mile, then did shoulder and arms, only 20 pds since Dr. hasn't told me I could lift more than that yet. do you think this is a good statring place?

Sounds good to me.  As long as you aren't overdoing it....Just listen to your body.