Hey guys. I'm new to the site and haven't searched around at all so I'm sorry if the information is already out there and I failed to follow procedure.
Anyways, for some background information, I'm a 23 year old male, about 6"2, 215lbs. I hurt my back 2 1/2 years ago lifting weights on two different occasions. I believe my lower lumbar (right side) and also toward the middle of my back, still on the right side. I don't know the proper name for that. Anyways, my doctor said my injury was the same muscle that just went up the spine. I tried physical therapy with no luck after about 2 1/2 - 3 months and he diagnosed me with chronic back pain. I was doing some stretches and some fitness ball exercises and doing knee raises on a pull-up bar and the ab-wheel to strengthen my core but still with no luck. I just ordered some books and a yoga dvd for back pain.
Down to my question, is irritation and some pain normal with a muscle strain during rehab? When I do this yoga DVD, specifically a stretch where I lay on my back and raise my butt into the air while pushing on my feet, I can really feel the muscle strain tighten and it can be slightly uncomfortable. I feel my muscle is slightly more irritated after I finish my yoga session. Is this normal or should I stay away from any exercise that I feel any irritation? Hopefully I provided enough details. Thanks guys.