Lost all contacts from iPhone... Please Help !!! :(

Hello,

I lost all of my contacts from my new iPhone today...

Well, I tried merging the contacts with iCloud from my old phone to the new one... After that, none of the contacts showed up on my contacts list... So I went to the iCloud settings and turned off the contacts button... It asked whether to keep the already backed up contacts or delete them... I accidentally pressed delete the contacts...

Now, none of my contacts are there on my old iPhone nor the new one... I went to icloud.com to check, and it was empty there as well...

It seems as though I don't have an iTunes back up as well since I just checked on my computer...

I really need all those contacts, or BIG trouble... Please help me someone, with genuine support and solution...

Thanks.

Additional Info : My old iPhone was an iPhone 5S. My new iPhone is an iPhone 6 Plus.