Hi, I've just had my little piggies for a few days and noticed one of them has hair missing on a patch there is a red raised scab type lump it looks like a strawberry, I can't get in to the vets until next week would be grateful for advice, it doesn't seem to be bothering her too much she doesn't seem to flinch when I go near to check it and she's happily pottering around and is eating plenty, there's no other patches on her or marks I've checked her, thank you so much.