It is fairly firm, but it's only come up overnight so i don't think it's a tumour or anything like that. It does seem to hurt a bit if I lift up his lip and press on it, the swelling comes from his gum not his skin ITMS. He's a very bouncy boy so can't get him to sit still long enough for me to get a good look at it! It's just a bit odd, because the last time it was a very distinctive lump, round like a ping pong ball, where this one is kind of just a fat swelling that makes one side of his muzzle look really wide.
i think I will ring them, rather be safe than sorry I guess!
Thanks hun