Need help with feeding issue...

I bought my first and only corn snake from a reptile shop here in town so I don't know how old it is. It's about 13-15 inches and 10-15 grams. The lady running the shop said that she was feeding it live pinkies up until the feeding before I bought it, then she fed it a fuzzy. Well when I went to get my feeder mice from a pet shop closer to my home the fuzzies they had seemed way to big to feed it, and I saw on here that multiple smaller feeders are better than one that may be too big, so I got two pinkies. He ate them both and seemed fine. So far he's kept them down, but my question is, is it possible to overfeed? It's been about 52 hours since feeding time and he seems 'lazy' almost and appears to have a visible bulge, though it isn't excessive, I just think it should have gone away by now. Is this normal? Should I worry or just leave him alone for a couple more days?