A little help

Ivanna • Married to my best friend 💍5/31/15. God answered our prayers & blessed us with our rainbow child, Abby on 11/26/16 👶🏻
Hi ladies so I know since our periods are very irregular it's extremely hard to know when you ovulate. I've tried opk cheap and expensive ones and they all always give me positives just every single day no matte what time it's like a big slap in the face.. So I was wondering any ladies who have a 35 day cycle.. When do u usually ovulate?