I am currently with my SO. We were in bed and I was half awake when the door lock made a weird sound and I haven’t been able to sleep since. 

Every sound I heard was me thinking an intruder had broken into the house and was in our room. I  was convinced someone else was in there and was waiting to do something, standing perfectly still in the dark. 

Every sound I heard outside I thought it was someone of his family dying or something. I could convince myself to pick up my phone to use the flashlight after about two hours. 

needless to sat everything is okay, nothing happened though Im still not convinced its really okay. 

Ive never had an experience like this before, am I going crazy? Has anyone had a similar experience before?