hi, I'm a teenage girl and for a while when ever i try to have a bowel movement my anus gets swollen and sometimes there is pus. i don't know why. I'm adding fiber to my diet and trying to drink more water. Even when i take laxatives and things like that my anus still gets swollen and i feel like i have incomplete bowel movements, and i have this feeling after every time i make a trip to the toilet. Do you think this is internal hemmorhoids?