My son never really complained much of pain other than rehab type pain, more like sore after a workout stuff. Nothing that approached what had prior to the surgery.
As his throwing program progressed, he was totally issue free until he got to the 150' phase and then he experienced some discomfort and a little swelling. We backed it down for a couple weeks and then he progressed past that point and to 180 and finally on to the flat mound phase. Each step of the way he is finding that there are no shortcuts. When you get to a level, you build strength at that level and then move to the next. When he first resumed throwing, he felt fine but could really notice the atrophy of the shoulder that took over quickly in the sling/down period. He felt like everything was "weak". That feeling passed after the first couple of weeks of light throwing as things firmed up some but he hasn't forgotten that sensation and is taking it slowly.