I was at soccer practice and we had a minute to drink, so I chugged some water down. I was still thirsty so after that drank so more water. When I went back out on the field my lower abdominal started to hurt. (it felt like I was getting stabbed) This has happened once before during a basketball game. Once the pain dies down it feels like a need to go to the bathroom to poop, once I try to go it never comes out. Once I am off the field I start feeling better and don t have the pain anymore. A also some times get wheezy and have to take an inhaler, but my doctor told be I don t have asthma. Is this something that is serious or no?