This is actually three stories in one.
The first one happened to my mom just recently a few weeks ago. My mom stays home with my son who's an infant while I am at work. My brother is currently home for college break, but he works all the time as does my dad so most days she is home alone for about 5-6 hours. One day while I was at work I called her and told her I was not feeling well and that my brother was going to pick me up on his way home from the mall. She had fallen asleep with my son and suddenly she woke up to hear what sounded like a female crying. Since I told her I wasn't feeling well she assumed it was me. She called my name, but there was no answer (as I was still at work, but she did not know it at the time). She was concerned so she got up and looked in the bathroom and my bedroom, but she could find no explanation for the nose, because there was no TV's on or radios on in the house.
I'm not sure if this could be a coincidence, but a few days later her aunt went to the hospital because she was having heart problems... Could it have been her crying? Maybe a premonition of what was to come?
My second story also happened to my mom always while she's been home alone, and more then once. My grandma's house is right behind us and she has a tendency to come over unannounced so when the back door opens and closes, which is in our kitchen, my mom assumes is my grandma coming in and she yells at her name and says hello, but never get a response. She has gotten up to look a few times and no one is ever there. She will call my grandma and ask her if she had come over and she always says no.
The third story just happened about three weeks ago. My dad was cleaning out our couch and he found a photo of him and his mom, which has since passed away about 4 or 5 years ago, taken when he was a little baby. The picture is fairly old--considering he was born in 1955. That might not sound strange... But the last time he saw this picture was years ago in the backroom upstairs. Our backroom is FULL of junk and you have to go through many boxes to find old pictures that we have stored up there, especially a specific one. Also my dad has cleaned out the couch many times too since the holidays were coming up and such.
Now we do believe there is at least one ghost in our house--possibly my mother's grandma since she lived in the house her whole life, so our house is very old--if not more. I've never felt any negative feelings, but when things happen it always gives me the creeps. I told another story of its presence in my story My Rings. As far as I know nobody in my family has seen anything, but we all have had strange occurrences that are just too much to be mere coincidence. My son, who is 7 months old does seem to stare up at the corners of the ceilings a lot at something that no one else can see and smile and giggles as do our 5 cats. My dog doesn't seem to notice anything which makes me believe he does not feel threatened in any way of whatever is in our house... Maybe they can see what's in our house?
I hope you enjoyed reading my stories and if you'd like to hear more let me know!