Good evening and happy thanksgiving eve everyone

my Bentley has been limping on his right front leg and I didn't really pay it no mind because he's always trying to get my attention. Well today it's gotten worse. He cries when he puts weight on it, won't go out side to potty and has had a decrease in his appetite. I called our vet and they can't get him in until fri and I don't think we could afford the emergency, is there anything I could give him over thr counter? I just want to help him with pain until the swelling goes down. I tried putting ice on it but he didn't leave it there very long. Please help!! I don't like to see my baby in pain
Ps...he's almost 7lbs