I had a colonoscopy done 12 months ago. Since then I have suffered nausea each morning (lasting until about 11am) and stomach bugs like you've never known in terms of frequency. One earlier this year landed me in A&E as it was making me dizzy and stopping me from breathing properly. Could this all be related to the colonoscopy procedure? I mean, the laxative they give you is designed to do a pretty thorough job in terms of clearing out the system and all the good bacteria. If so, should I still be suffering after a year?