I'm new here and my doctor diagnosed me with IBS a few months ago. I didn't receive much information and it's only through being on here that I know I am IBS-A. I suffer regularly from constipation and incomplete evacuation but due to the alternating nature of my IBS once things get moving it's back to the diarrhoea again. Anyway my doctor didn't do any tests or checks to diagnose me, just went on what I told him and gave me some Mebeverine (Colofac) to try and help smooth things along (which didn't help). I have 2 of the 'red flag' symptoms of weight loss and my sleep being interrupted by diarrhoea, neither of which are typical of IBS. Should my doctor have used any specific tests to diagnose me and due to these symptoms could my condition be something else?