Little Ones
Adult Guinea Pig
Everything definitely does come at once. Little has gone through so much the past month or so with going blind in one eye, to have gut and dental issues completely out of nowhere, and now he has a lump 
The lump is just behind his left shoulder blade area, feels soft, and seems to have appeared out of nowhere. I generally feel for lumps on him as he’s fuzzy, but also about 3 years ago he developed a puss-filled lump on his back which was removed (obviously what he has now isn’t the same thing). I don’t think it’s something I would’ve missed, so it seems like it’s getting bigger quite quickly - I could be wrong though. It’s 3cm by 2cm, but that’s a rough estimation and also could be wrong.
Anyway, what could this be? What should I do? I’d ideally take him to my vet but she is now not taking appointments due to the virus. Thanks in advance.
The lump is just behind his left shoulder blade area, feels soft, and seems to have appeared out of nowhere. I generally feel for lumps on him as he’s fuzzy, but also about 3 years ago he developed a puss-filled lump on his back which was removed (obviously what he has now isn’t the same thing). I don’t think it’s something I would’ve missed, so it seems like it’s getting bigger quite quickly - I could be wrong though. It’s 3cm by 2cm, but that’s a rough estimation and also could be wrong.
Anyway, what could this be? What should I do? I’d ideally take him to my vet but she is now not taking appointments due to the virus. Thanks in advance.