Inconsistent cycle numbers!

Hi there everyone,

This is my first time posting ever, and I am not an avid group question reader. So if this question has been asked, sorry!

My question is about the number of days in my cycle. I’m wondering if anyone else has been successful conceiving with very varying numbers like mine. Some months I have 27- day cycles and some months I have 34-day cycles. I’m struggling to pinpoint my high fertility and ovulation days because of the numbers, and I’m spending a small fortune on the OTC ovulation tests. HELP!

P.S. I’m 33 and we’ve been trying to conceive for about 4 months. Also I’m not the most petite or thinnest person in the world, but I’m not huge either. Though I do eat healthy and exercise 4-5 times per week, and lose a pound or two here and there.