For starts, I would have some basic labs drawn and an CT of your abdomen/pelvis done ASAP.
Have you started taking any new medications/drugs? If so, read the information packet that comes with your prescription and see if those are listed as side effects. Many meds can cause constipation and nausea.
It is always a good idea to check with your doctor.
could be any of the three yu have mentioned but could also be ibs (irratable bowel syndrome) go to docs and get a check over, good luck
hi, are you having pain in the upper or lower part on the right side. i ask cause the appendics in the upper. i hope you feel better soon. if the pain is still there on Monday i would call your doc and be check out.