Crying for no reason. Normal or Nah?

Every once in a while I find myself crying for no reason. I didn't used to think of myself as the emotional type but lately all it takes is a little nostalgia and I get these uncontrollable tears. It's always when I'm watching tv or something but it doesn't even have to be a super emotional scene. Like I'm grown af (25) and I just cried a little during this scene where this 16 year old girl fainted. She wasn't even hurt or anything 😩 just shocked. I gotta know if this is regular or if I'm going mental...