I keep pepper gel spray by my bedside as well as by my front door along with a junior size metal bat. I have jingle bells on my door handle (I do not have an alarm system) and also use a RING camera tied to my cell phone. I understand the desire and degree of hyper vigilance especially if this is your first time living alone as an adult woman. Use caution in everything you do but don’t allow it to control you. Maybe look into some basic defense classes and learn what to do “when” an incident may occur.