Can constipation cause nasuea, belching and stomach cramps?

Yes and No. ? can constipation cause nauseous & cramps. Symptoms oft associated w. irritable bowel syndrome (IBS) & poor AM appetite. I have observed in dozens of young male extreme sport enthusiasts; permanently injured their pelvic girdles from severe falls. My theory that sacroiliac joint (SIJ) subluxation impinges presacral autonomic nerves; thereby disrupting intestinal motility. ? Osteopath ? Cannabis.