First time using my cup!

Kaytlyn • 28. Happily married. PCOS. Mommy to 4 sweet babies JCJ 7/26/14 KRP 6/10/16 ARP 1/17/20 EMP 11/11/21 💙💙💙💜

Do I wait until I actually have a flow before putting the cup in or do I insert it as soon at first sight of blood (spotting)? TIA!