Been ttc for 9 months. Thought I was pregnant 2 months ago bc my period is usually 28-30 days; mostly 28 days. That month it was 36. Last month 30 days and now I just started and it has only been 25 days. It’s very frustrating bc I know ovulation is 12-14 days after your period, generally. But those days are based on a 28 day period. How am I supposed to keep track of when I am and am not ovulating when my periods have been so off the past few months?!