I had a colonoscopy 10 days ago. (results are ok). about 4 days after -when I started to go again, I have had an upsurge in IRS-C symptoms. taking miralax so the constipation isn't that bad (not sure it agrees with me however). Having mostly cramps, pain, nausea, headaches. all much worse since the colonoscopy. Can a colonoscopy bring all this on, or aggravate it?