Spots on face. Help!!!! :(?

Okay so yesterday I started working out ALOT and i was sweating like crazy. After working out I noticed these tiny tiny hard bumps on my face. theyre the same color as the rest of my skin but they are hard bumps. They have spread all over my forehead the side of my eye and all over my right jawbone and on my chin. What the heck is this?! will it go away?! :(