Very early pregnancy spotting?

Ok whatever method you're using to figure out when your fertile days are is totally wrong! If your period is 16 days away you will ovulate in 2 days and you will be fertile for 36 hours around that time. You ovulate 14 days before your period. If you are getting ovulation mucus or positive home ovulation tests more than 14 days before you get your period you aren't actually releasing an egg. You would need blood testing to be sure and will probably need fertility meds.