period cramps with no period?

Sydney
Hey! So usually with my period I will get cramps the day before or a few hours before my actual period comes but I've had really bad cramps the past two days that feel like normal period cramps but I'm yet to get my period? Any thoughts? For all I know this could be nothing lol but just figured I'd ask. Also-- I'm a virgin so I'm not pregnant because I heard period cramps without a period could mean you're pregnant. Thanks!!
(also I'm 15 if that matters)