Maybe this situation is temporary? Do you have dementia? My dad had the same but slowly he came back to us. Mysteries of the human brain I guess.
Don't fret. I'm sure it's equally painful to your family not remembering them. I'm willing to bet it is most difficult for your son.
So you don't remember? That's ok. Try to see the people that are around you, look at their good traits and the way they take care of you. Maybe you can love them all over again. You can always make new memories.