I agree with everyone here, and don't panic
Waiting until Wednesday will be fine. When I brought my puppy in for her first vet check they found hookworm eggs in her feces, so she is being treated for that now. Had her first round of medication, have to wait a bit until the next round is started. Worms are usually only a threat when they are left untreated for a long time. You are on top of it, so the vet will be able to figure out what kind of worm and give the appropriate treatment. Wishing good vibes for her!