Charting help? Anybody else chart??

Ok ladies. As per a typical pcos person, my bbts are all over the place. I use fertility friend to help me keep track of everything. It thinks I ovulated on day 19, I think I ovulated yesterday, day 24. What do you think? Trying to get pregnant after a miscarriage and hormones are more out of whack now than before pregnancy (saw the endo yesterday). I didn't ovulate until day 30 last cycle.