Thanks again, Pegasus. With another couple of paracetamol, I was able to see my friends - was limping a bit, but it wasn't too bad. Had to cancel my driving lesson today, though, because it hurts when I put the handbrake on.

Dad thinks that this is muscle pain - apparantly he gets it a lot. So he reckons it'll go away by itself in a few days, and I just need to keep active. After this morning, though, when I tried going on a walk and came back home worse than when I went out, he's agreed that if it's not better by Tuesday then I should go see the doctor. In the meantime, more painkillers, I guess! Found out last night that I can actually take twice as many as I originally thought, which is good.