Hoof puncture

My horse picked up a concrete bolt in his foot. The vet treated him on Thursday (three days ago). Can anyone who has experienced this give me any idea how long it will be until I’ll have a sense that my horse might be OK? Currently he isn’t lame and has no fever. He stopped favoring the faot as soon as the bolt was removed.

Tomorrow I am supposed to take the bandage off and soak it then re-bandage. I am very worried and perseverating about it.

Report below:
Assessment: Nail was in right front in collateral groove near bar (caudal heel). Screw had a washer on it preventing increased depth. Scrubbed with betadine and alcohol. Inserted sterile mosquito hemostat and took skyline and lateral radiographs. Hemostat appeared to go in digital cushion/ ungual cartilage region.

Gave tetanus booster IM left neck.
Gave 20 mL Ceftiflex (50 mg/mL) IM right neck in 2 spots. Applied magnapaste and foot bandage.
Discussed with owner how radiographs are helpful but cannot provide us with 100% confidence it is not in a synovial structure.

Told her to watch for fevers or any lameness. If noticed, call right away for surgical refferal. Warned owner he may have recurrent foot abscesses after this.

Diagnosis: street nail that does not appear to enter a synovial structure
Plan: Give 20 mL ceftiflex antibiotic twice daily for 2 days, then once daily for 3 days. Watch for diarrhea and call if noticed.
Bute- give 2 g once daily for 3 days, then 1 g once daily for 3 days.

If he has a fever 101.5 F or greater call. If you notic any lameness, call.
Leave bandage on for 3 days. After removal soak in epsom salts for 15 minutes daily for 4 days. After soaking put diaper on foot and put his boots on to keep it clean.