Spotting why?

Mareike
I posted in another group but thought I'd ask here too. 
I started having light bright red spotting 8 days before my period. Along with slight cramping but not half as bad as it usually is with my period.
Hubby and I aren't TTC but I'm not on BC and he always pulls out. I doubt I'm pregnant but would love some insight. 
Thank you! 💜