Did I miss Ovulation????

I do not know what is going on! Did I miss Ovulation? I thought I had ovulated on Friday, since I had a huge temperature rise on Saturday, but then it came right back down on Sunday. What is going on? I called LAc to see if she understood what was going on. She went into telling me that it probably my ovulation time then, but it seems the egg just didn't release or something. She said this can happen. I'm still really confused. I had EWCM and all, but no Ovulation!