Hi my name is nandini i'm female 22 years old. I've been experiencing blood in my stool for several months now it's not constant blood but every month but this month has been the worst, the blood is a lot and has increased during the past week. I also get pains and burning sensations also I get constipated and get diahorrea in a very unpredictable manner. 2 days ago I pooped like diahorrea and a day after I was constipated.