My cat is outside almost 70% of the time and today when he came home he had a sort of bruise above his eye which i didnt think much of because he gets into alot of fights and is vaccinated for all the diseases other animals could give him but i took a better look at it and it appears to be leaking a sort of transparent liquid like pus and im getting worried. He isnt in any pain and i checked him for ticks and he is eating like normal. Do you think it should take him to the vet because last time he was there he nearly got a heart attack and freaked out so bad we had to take him home.