Sports Bra for runner

I was running and playing volleyball before my surgery.  I had a  wide local excision high in Lt breast UOQ of a 2cm IDC close to the chest wall (clear margins)  A single sentinel node was removed too (clear).  No chemo just 15 days radio which was well tolerated.  It has now been 3 months since surgery and I still can't run, even in a tight sports bra, without pain and have not played volleyball since then either due to pain and worry of being hit in the breast by the ball.  I would be interested in knowing about other peoples experiences timewise as to when they resumed running / playing.  I naively thought I might be running again by now....  Will have a look at the shock absorbed brand mentioned earlier as it can be bought via Wiggle.