Hi ,I am new to this site but would appreciate some advice if anyone has had similar experience with their dog or knows more about it than I do .My 7 year old bitch Fiona ,developed 3 mammary tumours and she went to the vet 4 months ago about them as they seemed to grow quite quickly . On examination I was told she also has a grade 4 /5 heart murmur . There had been no sign of this a year previously .To cut a long story short ,I was uncertain about surgery and delayed for 4 months as I was worried about heart failure, having recently lost another dog to it . The surgery was 8 days ago and for the past 3 days ,Fiona has seemed uncomfortable on walking ,If she has to get up, she squeals and scurries from A to B as quick as possible so that she can sit down again . If allowed she would not move off the sofa. She tries to pick at her stitches immediately on movement . At rest she seems fine .Could they be stretching the skin when she walks ? Her appetite is picky ( unusual). She had her post op check 3 days ago but she was not bothered by her wounds at the time to the extent she is now . The biopsy of the lumps has come back positive for malignancy and Fiona is returning to the vet next week as an area of the wound seems a bit 'lumpy' which the vet thinks is likely to be due to the surgery . Fiona is on daily metacam .Sorry for the long post but wondering if she should go back before next week,or is this normal ?