I have been riding a recumbant bike over the last 3 months (up to an hour a day) and recently switched to jogging. I was hoping to work up to 3 miles a day using the couch to 5k program (slow buildup over 9 weeks). I'm currently 5'10", 203 lbs (down from 249 lbs since June). I did my first run on the street (cement) and did okay. I did my next 2 runs on a treadmill. These runs advocate 60 seconds running followed by 90 seconds walking. I did another road run stepping up to 90 seconds running, 2 minutes walking. This workout was much harder than the others as I started getting leg pain a few minutes in. The pain was in my inner knee and has been getting better. I switched back to the bike while I had this pain. A trainer in a gym in our building is pretty sure it is an MCL strain and advocates waiting at least a week after the pain is gone before running again. I intend to do my running on the treadmill since it seems to give less strain to my legs.
My questions are these. Do I need to wait to lose a bit more weight before I start jogging? If not, do I just need to run on the treadmill until I build up more strength? Are there any particular stretches that might have helped avoid this? I use the stretches located here
Stretching .
I hated this happening now as I was just starting and just want to avoid it in the future if possible.