I'm worried!

Elizabeth • I am 25 years old, I love music! I`m happily taken by my best friend. And we love to travel and be adventurous as possible!
So me and my husband had sex yesterday and it hurt a bit and it usually doesn't really hurt. But this time it hurt. And today I started bleeding out of no where! And my period doesn't start for another 7 days. And I'm kind of cramping or some pain down there. Idk which one it would be. But I'm a bit of worried if I have something wrong going on down there. Does this happen to anyone else?