I have a lab who is almost a year and a half old.About 10 days ago he was very lathargic and wasnt eating.We took him to our local vet and they kept him saying he had a fever and an infection.We were going there everyday to see him.The first 2-3 days,he lost a lot of weight and went really weak as he wasnt eating no matter what the caretaker there did.The 3rd day he ate and by the 7th day,he started to look a little better.My dad had car trouble the next two days and we couldnt go see him.We went today and he looked horrible!deathly sick!His lips were so swollen and he had two ulcerated areas on his body(One on his dorsal side a little above his tail about 2-3 inches in diameter and the other on his right front leg the size of a dime)it looked like when someone grazes their skin off and you can see the pink flesh underneath.We got soo scared,my dad scolded the caretaker why he hadnt told us.He said it was nothing to worry about and that he had been dressing it but i doubt he was.He has been on ampicillin and an analgesic for the last couple of days.I dont think the vet knows what he's doing.I mean no disrespect to vets but i live in small town in Pakistan and we dont have the best vets here...Please,help!