Shin splints and pain - Help!

Hi BT'ers.I am hoping someone can reassure me that what my leg is doing is normal. I had been feeling shin soreness for a couple of weeks, which is not unusual for me. It was not bad, so just kept training. Them one Sunday, did And 80km ride, with a run straight after. The first 3 km of run were totally fine, no soreness or pain. After that, I was running up an incline and my shin just seized as did the back of my lower leg across my Achilles. I kept running for another 1.5 km and it got worse and worse. Searing pain in my shin, and excruciating pressure across my Achilles. It felt like my lower leg was going to explode. For three days I could barely walk, then paid slowly subsided to deep aching. This was 3 weeks and 3 days ago.Since then I have had an X-ray and a bone scan which revealed no stress fracture, but quite extensiving tearing along both sides of my shin bone. Doc orders, no impact until I have had no pain for at least two weeks. So far, I am still getting a feel ache along my shin bone most of the day, when sitting and lying down mostly and constant pressure across my Achilles. It feel like it is swollen but it's not. How lo g will this take to heal and is this normal for this injury?I am missing out onPort Mac 70.3 because of this and I am pretty upset. When will I be able to try running again?Any advice or examples of your own would be greatly appreciated.Cass