I brought my puppy home three days after she was spayed. At her foster mom's she had licked her stitches out and so now has staples. She's doing a really good job of not licking them, but I can tell by the way she sits and lays down that they're bothering her. Her incision looks really good, and she is on antibiotics. I'm wondering if a cold pack might help her and make her a little more comfortable. If she lets me, is there any danger in using one for just a couple minutes?