Hi , I'm so sorry that you're dealing with this. I personally don't have these particular symptoms, but there are many community members who deal with pain and nausea. I'm going to link a couple of articles below:
https://irritablebowelsyndrome.net/chronic-pain
https://irritablebowelsyndrome.net/living/hello-nausea
https://irritablebowelsyndrome.net/symptoms/nausea-sign-symptom-of-ibs
Have you been diagnosed with IBS by your doctor? Did they perform any tests? If not, I would insist on having tests done to rule out any other causes for the pain.
Wishing you all the best, Karina (team member)