What is wrong with me am I just overly paranoid?

I'm the same age and you're not alone in feeling this way. Whenever I get home from work or school and no one else is home I do a sweep of the house, checking all bedrooms, closets etc. to make sure no one broke in and is hiding in there waiting to attack me. Or when I take a shower when no one is home I lock the bathroom door, and after taking a shower it takes me at least 10 minutes to leave the bathroom because I'm scared someone broke in while I was showering and I couldn't hear it. So I hold my breath and press my ear to the door to listen, and then I get on the floor and look through the crack under the door to see if someone is standing out there waiting to surprise attack me. It's hard for me to sleep at night because I'm scared of someone breaking in while I'm sleeping and catching me by surprise, giving me no time to fight back. I barracade my bedroom door at night so no one can get into my bedroom.

This really isn't healthy behavior. I don't think you're going crazy, but I do think you should talk to a therapist or psychologist to find out what is causing you to worry about these things. I have an anxiety disorder so it tends to make me think the worst case scenario and it makes me worry excessively.

I do experience the same thoughts in my head. It's not something everybody goes through constantly, but you may want to be evaluated by a psychologist if it feels serious enough. You aren't going crazy, the fear of that often comes with the thoughts you talk about. Good luck to you.

I recommend taking pills for it. Or else you should chill out, and realize that there is nobody in your house, and nobody is going to slit your throat open, or if there is the possibility that there is someone that wants to do that, you should call the police, or buy a gun.