My boyfriend has noticed bug like bumps on his arms. They are red and very itchy at first but then become hard after a day or two. When he squeezes one a clear liquid comes out of it. We thought maybe bed bugs but I sleep in the same bed with him and I have noticed nothing. We also were thinking maybe hives but they last three to four days and I didn't think hives have liquid in them. The bumps do not come to a point like a pimple