It all started when I went to my rich friends birthday party. She had a really big lake behind her house with a dock, (All the houses around her too had one) I went with 4 people tubing, and swimming, I only fell once pretty hard which was the first time I went on, I also got pushed into the lake and water got into my nose. But my headache started immediately after the second time I went tubing, I didn't fall, but after the jetski stopped driving, the right side of my head started hurting. Its been 5 days and it still hurts. It only hurts if I'm doing certain things. And the right side of my neck also hurts. Can someone get close to what it is? My mom said it might be an amoeba but I don't really think it could be that since Its only a headache and I don't really feel anything else.