Where did my desktop icons go when OS was upgraded

All my personal desktop icons disappeared when the OS upgraded. Can they be restored?

Don’t know what to tell you that would be helpful. I accepted an update to OS 10.13.1 and upon completion several hours later I no longer had any icons on my desktop that lowered there before; several of which were folders containing the text & WORD files I created over the last couple years. I CAN’T FIND THEM ANYWHERE. Very frustrating.