7 days late BFN x 3. What happens next cycle after absent period? please respond.

Rachel
Hi! I am 6 days late. I have done 3 pregnancy tests and had 3 negatives. Although I would ❤️ to be pregnant, I am a little confused as to what happens within the next cycle. I've been having regular monthly periods since coming off the pill in October. We have only been trying since December. I did catch, had an early positive but then a chemical miscarriage in January. Since then cycles have been regular (within 3 days of due date) but I never miss a period. What happens next with my 'cycle'? How can I next predict when I might be fertile as I have no period to log for this month? Thanks for any help.