iPhone 6 duplicate photo after sharing

Hi, I have a problem. I have photos on my device and iCloud. If I share my photo (no matter of the way, Viber, FB Messenger, Hangout ...) my device make double same photo. My wife have same device, and we have same settings for Photos & Camera and she haven't this problem. Does anyone have some suggestion for this problem?

Thank you in advance.

Regards.