Ovulation late?

Alicia

We have been TTC (trying to conceive) for 7 months. For six months I have ovulated on cycle day 19 or 20. This month FF (fertility friend) is saying about cycle day 25. I have been taking my temperature at 5 a.m. every morning. We do have a portable AC and sometimes I wake up cold. I decided to forgo opk's this month because I want to see what happens when I relaxed a bit. If that makes any sense.

Thank you for looking out