Hi, so i have been trying to conceive for the past seven months and just lately ive been using the online ovulation calender to determine my most fertile days...now my periods cylces arent always the same..sometimes my cycle is 28,29,30 days..on average i have honestly no clue...so my question was to determine my most fertile days, in the column where i am supposed to put in days of my cycle what should i put and if i put in one of those numbers wouldnt if affect the days when i am most fertile..in other words wouldnt it be incorrect??what should i do??