anal glands

Petey has been chewing his back/tail area for a week or so, he had them squeezed about 3 weeks ago, so we never really thought it was his anal sacs, just allergies. But we took him to the vet today and she said he needs to have his anal sacs surgically removed. She recommended doing this and having him fixed in one surgery. Has anyone's boston ever had to have this surgery?? Did it fix the problem? Are there any other problems after? He's pitiful, but he does seem to feel better after she emptied the glands today. He'll have to wear an E-collar after the surgery, and that's just pitiful! Thanks in advance!