I'm 18 years old. I poo about every 3 days and when I do, it's extremely hard to push out and they come out as little pebbles, not one connected stool. Today, it hurt coming out like something was sharp and it seemed like there was something fluffy on the stool. Please help, I've had these problems for a while and don't know if i should see a doctor. I've tried drinking more water, taking fibre supplements and laxatives, but none seem to work.