Help needed urgently

Hello xda , my phone note was rooted with stock rom with cwm 6.0.1.2. I accidentlly installed a rom through recovery without making a nandroid back up and wiping data. After restarting the phone Im getting a yellow triangle. I can get into download mode and recovery but i dont want to lose data.
I am not able to make a nandroid back since its giving me an error
I cannot mount usb or data through recovery.

Please help me out as i dont want to lose data.

Quick help will be appreciated.