Cycle is 6 days shorter this month?

Allison • 28 years old, 2 miscarriages in ‘15 & ‘16. Married 💍. 💙 KJS 6/30/18 💙 BBS 4/29/22
So my last cycle (that ended in May) lasted 36 days, and I ovulated on CD 17. The cycle that ended this month lasted 30 days. Does that mean my ovulation day might come 6 days sooner? Or does it not necessarily mean anything?