Hi guys, iam glad to join this forum, but its for reasons that i never thought would happen to me. I need serious advice of what to do.

Iam a big fan of limewire, love the fact that i can download all my fav songs so i will always use it.
But last year when i discovered that you could download porn on limewire, some sickening images of child abuse came with it. I had highlighted the search results to save time looking through each individual file, i was about to have an empty house so i thought i would get prepared lol. Anyway after highlighting then pressing enter, all the highlighted porn files started downloading.
Good so far.
After ten minutes of scrolling the internet i returned to limewire, and was shocked and disgusted to find what i did. Quite a few pics had been downloaded with titles that suggested it was child porn. Straight away i felt instantly sick and a cold feeling filled my body. Quickly i stopped downloading everything, deleted all my dowloaded files and switched off the pc. I started to think the police would be at my door in a matter of minutes.

The next day i decided to go back on and make sure all of the filth was deleted from my limewire. I then discovered i could type in keywords to block such files, and thats what i did. I thought if i typed in words such as kid and child, the chance of it happening again would be nil, so thats what i did.
I continued to download porn from limewire, thinking that only Adult porn was being downloaded as i had blocked out files with the words kid and child in them. But this was not the case. A couple of times the filth had been downloaded again and as i did before, i deleted them as soon as i found them. This then prompted me to stop downloading all porn from limewire, which i perhaps should have done before. In the keywords box i typed in all sexually related words i could think of to make sure of this

Ever since then i have been living in fear that the police will be at my door soon. Iam 16 now, was 15 when it happened and as you can imagine i have been mentally exhausted by this. Everytime i see police in my street, i think they are here for me, and sometimes i actually wanted to approach them and inform them of what had happened, but i didnt have the balls. It has been my dream to work in the police since i was a little boy, and child porn is something that absolutely sickens me.

My question is what should i do? Iam leaving school, want to join the police soon as possible, but i just couldn't do it knowing that i haven't reported what i accidentally downloaded. Iam scared that if i do tell the police, they will instantly suspect me of being a sick pedophile b*****d, which is something that iam not. Also, still being at school, Iam terrified that if i did report it, people at school would label me as a pedo and i would have the **** kicked out of me. I have came close before to telling my mum, but again iam scared in case she wouldn't believe me, even though i know she probably would.

So how should i report this. if i was ever even suspected of being a pedo, i honestly would consider suicide, thats how worried and depressed iam.

Please give me advice guys.