Hirschsprungs Disease (congenital aganglionic megacolon) HELP! Im 15 years old and had it sincei was a baby?

Hi ive got a condition known as Hirschsprung’s Disease. I go to the doctors regularly asking for them to prescribe laxatives for me, which they do but none of them seem to work. Ive tried Movicol, Bisacodyl, Mirco-Lax, Lactulose, Senokot, everything! I have a pain in my stomach which is caused by the contractions of the bowel and it is very painful and annoying as im having alot of time off school (like now) and i cant concentrate at school. Basically i need someone who may be suffering with this disease to tell me what you used to get your stomach clear from blockages and to prevent constipation. Also some sort of medicine or heral remedy to help stop or even ease the pain which comes along with my stomach cramps. I’ve used Peppermint capsules too and Peppermint tea but they also dont really have no effect, along with pain killers but they aint working either. Please help im so fustrated and would like someone to tell me what they have had to stop this or someone in the profession.
Thanks Everyone