I just noticed two areas in my fiberglass pool that have dozens of small bumps. This is only our second summer with this pool. Our pb pretty much abandoned us after installation, so I'd rather not even have to deal with him. I don't think these bumps have always been there, but I'm really not sure. I think I would have noticed them. They are located on the seat and along the edge of the built-in seat in the deep end and on a small shelf just beneath the skimmer. I would describe them as the size of mosquito bites. Has anyone familiar with fiberglass ever heard of such a thing? How worried should I be?

Thanks.