invisible bugs?

I know these pictures are crazy blurry. But it was the best I could do with Presley squirming like mad. I have no idea where these bumps are from. Jeremiah thinks they are from playing in the grass yesterday, but I'm just not convinced. They were not present until I got back home this afternoon from seeing a movie. So I think that time period is too long for them to show up if it was really the grass. I am baffled. Presley isn't acting like they are bothering her though. So I guess that's good. I really hope they are gone by the morning, because they are awful to look at. :(