Hi everyone I am waiting for a colonoscopy I'm 42 year old mum I have had bowel changes for 2 months and suffered ibs for years I just wanted to ask why is there different bowel changes I had diarrhea for 3 weeks non stop now I have constipation and started feeling very dizzy and sick I know there's a problem but don't know what . I was supposed to have the 2 weeks appointment missed the hospital call mobile run out of battery now I haven't heard anything yet I'm worried they are going to put me back another 2 weeks