Hi Beeniesmom! Its been a while since we have been in touch!

I would definitely keep an eye on the lumps. While they could be a pimple, they could also be a number of other things. Do the lumps bother her? There is a possibility she could have a hernia where she was spayed. It could also be a cyst. Sometimes dogs do develop lumps after surgery and they are nothing to worry about, especially if Beenie is unbothered by them. I would say that if they have not gone away by next week or continue to worry you, consult another vet. Its better to be safe than sorry.

Best wishes.