Bowel Problems.

Okay, so if you have a strong stomach, please keep reading; otherwise, this question is NOT for you.
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okay, so I've been dealing with IBS (Irritiable Bowel Sydrome) for as long as I can remember, (keep in mind I'm not even 16 yet) 
Lately, I've been making some progress with bowel movements.
You would think, "Yay! I can finally poop without the need of medication like a normal functioning person!" — wrong, toilet paper hurts my butthole. It causes it to bleed & it hurts to wipe.
I'm afraid to tell my parents, what should I do?