Was wondering if someone could help...my bbt rose .57 yesterday (97.32-97.9) today it is at 97.81..does this mean I did not ovulate since the temp dropped a little- or is the minimal temp drop OK? My OPK turned positive yesterday. 2 apps are telling me I ovulated on the 97.32 (cycle day 13) and another is telling me I ovulated the day before that (cycle day 12) and glow says today is ovulation.