Unusual Nipple Sensitivity...

Shelby • 22 year old bisexual 😏
My nipples have been SUPER sensitive for the past couple days...anyone have this problem? It doesn't really go away throughout the day, and it's kinda annoying to literally  always be hard...I've been unusually horny too...I'm 21 and this hasn't happened before, so I don't think it has to do with my cycle... Any ideas? 
(Also, haven't had sex in months, so I'm not pregnant...)