Suggest Treatment For Pain In Wrist While Flexing It

One week ago I noticed pain in my wrist. A have a sharp pain in my wrist if I try to bend it forward or backwards. I can twist my hand from the wrist, lift things, etc. with no problem. I even noticed I can do push ups with my hands in fists, but If I try to put it flat on the floor, I can put no weight on it at all. Any ideas on home care?