Is the isle of man strict on drugs?

i was caught in the isle of man with 500 diazapam which i had brought over with me from northern ireland , there was no intent to supply they were actually mine as i was going through some rough times but they also found 5es (xtc) they were not mine i think i was set up in a bar but still on my possesion ... i dont even take class A drugs and i wanna no if im gonna go to jail when i go back or how likely it is for me to be going to jail