Is it normal that i'm super emotional?

When I say "super emotional" I mean it, like when someone yells at me I physically flinch and have to tell myself not to burst into tears. Or I'll watch a movie, like WallE, yes, the animated movie, and sob some at the end. The latest thing was I heard tapping on the deck door and when I got close to it something bumped into it and I screamed and ran away, shaking behind the couch only to find out it was a bug. Does anybody else react in these ways?