Swollen Knee

[Saltlick]

I am having the worst time with my goats lately, my heart is breaking. Django's knee is still swollen, exactly the same, yet still no pain. Two days ago when I showed up to feed them, Putnik did not come to the gate, nor was he calling - my heart stopped for a second!! Finally he slowly walked up, in a lot of pain. His left back leg!!! He was limping so badly!! There is just very slight swelling up in the mid-thigh area on the outside, and he freaks out if I try to touch it, even gently. I am seriously hoping he just twisted it somehow, but it's day three and he's still limping and walking very slowly (although a tiny bit better) - I'm worried he may have a fracture... How? I have no idea, they were in the pen. The only thing I can think of is he and Django sometimes hook each other's back legs with their horns. I'm leaving in a couple of days for two months and my heart is heavy... I can't believe all of this bad luck right before I leave. I really can't.