My mom accused me of being a !? HELP PLZ!?

I am only 13 and for some freakin reason my mom thinks im a ! She went into my room this morning to grab her shirt i borrowed and when she comes out of my room she like starts screaming at me saying im a sl** and some dirty names. I am like woe woe woe! what are u talking about? but she just kept screaming at me and then left out the door. I am a virgin still and own no ual toys what so ever. What would make her think this? She texted my cell phone saying this "hey im not going to be home for a few hours, while I'm gone try not to screw anyone!". WHAT IS HAPPENING!?