Ovidrel and BBT

Rayna • 38 years old and been blessed with two little boys, one through IVF and one conceived naturally, both with countless prayers.
Hi ladies. Have any of you had an experience where you did a trigger shot (like Ovidrel) and did not see a BBT rise indicating ovulation when you expected to?  I used Ovidrel Monday night and had a very positive OPK Wednesday morning. I have not seen a rise in BBT yet. Is this normal and I am just paranoid?