5 YO female border collie, she has no known allergies, it’s quite a long story and I don’t know what parts are/aren’t relevant. I noticed multiple small scabbed wounds on my dogs belly a couple months ago and a large wound on her paw, vet prescribed steroids and antibiotics and the small wounds mostly cleared up (the vet noticed a few still lingering a few days ago) but the wound on her leg is still there and she now has multiple other. They’re all different in type, the elbow is very dry skin and scabbed and as you see by the pics, the paw is oozing and raw. The oozing wound wasn’t even there when she saw the vet a few days ago, it was just a lump which looked sore but it became worse overnight and slightly moved in location on her leg. She’s now got the cone on just about 24/7 and is otherwise under a lot of supervision but she has managed to get it off during the night one time. she’s now on antibiotics, her appetite hasn’t changed and she’s not limping. the vet suspects most likely bacterial or foreign object but I can’t afford the exploration surgery she’s suggesting. I also have 2 other dogs who have access to the exact same space as her and have no wounds, that’s mainly why i’m unsure how it could be a grass seed. she has rarely been out since the skin problems/wounds have show up as i’m heavily pregnant with medical problems that are limiting my ability to exercise. There’s a lot more detail to the story so please ask anything you need to know, i’m obviously in consultation with the vet currently but she wants to do $1000+ of different tests to figure it out which i’m not in the position to do, so i’m wondering if anyone has seen anything similar or has any idea what causes it? 

multiple wounds showing up on my dog suddenly