Do I have a bladder issue or is it worst??

In school we have high school pes to go to the bathroom and all my for the rest of this semester are gone. I constantly use the bathrooom and I just cant hold it like I used to. I try not to drink anything and it still doesnt matter because I have to go anyways. Then if I hold it to long both sides of my backside hurt like hell!! What is wrong with me???I use the bathroom atleast 6 to 8 times a day I hate this!!