So I have a doe who has mastitis! Knot like lump under one of her teats! Ended up taking the babies away (5 weeks and doing good on own). I purchased some penicillin from tractor supply and have given her 2 doses already! I do not see very much change in knot ? Should I see it this soon? When I express milk out of it it’s pretty milky looking! Spot is prob a golf ball size five or take! Any suggestions! And do I give penicillin for 3 or 4 days straight?