Successfully removed a long thorn from a hen's foot last weekend after soaking in Epsom salts. Soaked, flushed, antibiotic ointment, dressing. Soaked foot every day for three days just to make sure got all of it, Epsom salts. Re-applied antibiotic ointment and dressing. Skin has healed beautifully but residual swelling and heat in leg tells me she's got an infection. I went with .25ml of injectable Penicillin G tonight. Was that the right thing to do? TIA.