One month ago my husband and I had our 2 silky terriers spayed. Milly has been fine, but Polly had a lump even before her stitches came out. She had her stitches out a week after the op, and we were told that it would calm down. The lump in the last couple of days came up like a blood blister and then had a yellow head on it like an abscess, and it burst before we could get her to the vet. The vet said it was probably a reaction to the internal sutures which apparently take about 120 days to dissolve. She is going in tomorrow and he is taking the sutures out. from the day she had the op she didn't leave the stitches alone, so it is not clear if her constant attention to them has played a part in this, or the irritation is what caused the attention in the first place. We are not having to pay for this treatment so I guess the vet is also checking that he did things properly as well, I don't care as long as she is safe and healthy after all of this, Toni