Simple Knee Surgery?

My husband went in for a simple arthroscopic knee procedure to repair a torn meniscus and everything went wonderfully. The surgeon said it was easy to fix and his knee looks great, no arthritis or anything. Alan felt great, his knee was not painful at all and he had no problems walking on it, except his calf really hurt after the second day. He said it felt tight, like it does after starting jogging after time off, we thought it maybe from the exercises he needed to do. But it didn't get better, I really didn't feel comfortable with it, so finally demanded he call and get it looked at. He has a small blood clot in his calf. He had been on aspirin because the surgeon was concerned about his varicose veins, but he'd never told us the symptoms of a blood clot and we didn't think to ask. Thank goodness for the Internet, that's where I found the info I needed to convince him to get it looked at. So now we're on blood thinners and I have to give him injections for 5 days and coumadin for 3-6 months. We're keeping our fingers crossed that it resolves quickly and without incident!