Lost Contacts in iPhone B, while transferring fm iPhone A

Hello,

I have two iPhones, one with a US number (iPhone A) and one with an Indian number (iPhone B).

I wanted to retain the contacts I have in B, and transfer the contacts from A to B.

I synced A with iTunes through my Sony laptop.

I then connected iPhone B to my laptop.

That's where something went wrong, because after I synced B with iTunes, I had all the contacts that were in A, but lost the contacts that were in B!

I have an iCloud account too.

Is there any way to retrieve the contacts I originally had in B?

Thanks for your help.