Maybe it's your sinuses. That would explain the dry mouth and strange taste. Also it could be the dripping making your ibs weird or the ibs could just be a coincidence. I hate not being able to go to sleep from being freaked. Try and do something relaxing/distracting and remind yourself that it's sinus and ibs ... both suck but neither make you sick, Feel better!
\"As soon as you trust yourself,you will know how to live.\"
Johann Wolfgang von Goethe
\"Do not anticipate trouble, or worry about what may never happen. Keep in the sunlight.\"
Benjamin Franklin