Does this sound normal?

[Nene]

Skrump went to the vet this morning with his scent gland problem, and the vet popped it, and this gross yellow stuff came out, then the vet said "hold on a minute, Let me give him some gas and drain(?) this out." He said it was an abscess because it popped, but then again I'm not sure if these vets know what they're doing some of the time. Anyway, I am thinking by "drain", that he meant that he was going to flush/irrigate it and get out all of the germs and stuff. (Like with a syringe full of a saline solution maybe?) On the bill, it said that they did a "wound flush" so I don't know what that means. Anyway, he seems to be doing fine..the first thing he did was run in his box and eat, lol. When we got home, I cleaned out his cage and gave him all new stuff so that it'd be nice and clean for him. His belly looks sort of bloody, but I think there might've been blood mixed in with the pus and stuff in his scent gland. He's sleeping right now. I hope he is okay I just thought I'd post this story and see what you guys thought about it. Is that what most vets would've done for that problem? He also gave him smz-tmp antibiotics, which aren't on the "bad list", so I'm assuming he knew to give him hamster safe antibiotics. Oh - and what are probiotics? And can you buy them in the US? Thanks