Does itunes perform a backup before doing a data restore?

I am being a little hopeful here.

How it all started was that my husband's iphone contacts suddenly had all the names disappearing -- all that was left were the numbers.

Then in reading the threads, all suggestions only led to Verizon support solutions and we are from SG and this offering is not applicable.

Hence, we did a manual backup re-store from a backup file dated mid July 2013; not realizing:

- that the restore did not provide us an option to only re-store the contacts but actually did an overhaul overwrite of data until mid-July 2013.

So my question is, is there any chance that iTunes may have done a backup somewhere before it performed the data restore?

Or can I roll-back and undo the above operation? (My fault, I didn't think of synching the whole iPhone with the photos and everything else first earlier today to see if that fixes the missing contact names issue.)

I would really appreciate if anyone can offer any advice.

My hubby is really upset that he's lost about 2 mths of :

a. photos as well as

b. whatsapps messaging

If anyone knows of how I can recover either of the above, I would really appreciate it.

thanks

Em - A wife in big trouble