opinions

so I I got up about a hour and a half after going straight to bed and going to sleep, I kept having sudden sharp lower abdominal shooting like pains, and it woke me up a few times, I got up about 30 minutes ago because it hurt so bad and I was shaking like I was freezing cold, but I'm not cold nor hot. I went to the bathroom thinking to myself oh I just need to go number two, then go back to bed. but I tried and I didn't have to, I was uncontrollably shaking so bad setting on the toilet i thought I was gonna pass out. I got nauseous and light headed, and started to get tears in my eyes. and I forced myself to get up and push through the shaking, I stood up and threw up everywhere in the bathroom floor, and I came to bed and woke up my fiance and he went and cleaned up the mess and brought me something to drink. but I don't understand why I kept having those stomach pains and if it's related to me freezing shaking but not really cold, and no fever, and nauseous and sick. any ideas?.