I just took fluid out of my Big Red. Came out yellow and foamy - I think there might have even been some air in there?? I wasn't able to get much out cause she kept squirming so we'll try again in a bit. Am I correct in assuming this is perontinitis (sp?) and also correct in believing there is not yet an infection? I gave her some antibiotic but it was hard to find some meat on her, which is weird cause she is big! Thoughts?