I got my female cat fixed about a week ago, and it looks like her stitches are coming apart. There are three stitches and there is an opening of about 1/2 a millimeter........I'm not sure because I'm inexperienced with the issue. Is it normal for them to look like that, or is the wound supposed to heal like that. I'm really confused on whether to take them back to the vet. PLEASE HELP!