Hi I am 37 years olds, I am a female. I have had Diarrhea for 6 weeks and my doctor done a stool sample for people over 50 I think it’s called a FIT test and it’s came back positive they have put me on tablets for the Diarrhea and after been on them for 1 week I am now constipated and been referred can anyone explain to me what could be going on??