One of Bailey's scurs was loose last night so i put her up in milking stand to remove. (This was about an hour after milking, she seemed fine then) When i lifted it to see how well it was attached, there was a maggot under the scur. Got the scur off, minimal bleeding, trimmed the hair shorter, no sign of infection, but dusted it with sulfa powder anyway and then some blood stop powder just in case and put her by herself so she wouldn't head-butt anyone else. This morning when i milked her, her udder felt warmer than usual. Took her temp, it is 104. She was eating, and otherwise seemed fine. Should i give her penicillin? She is about 50 lbs, (i can go weigh her to verify) so it'd be 5 cc twice a day - IM i hope?