Day 21 progesterone test

Hi, I had my day 21 blood test and going off by ovulation I was only 4dpo not 7dpo bc I ovulate later than day14. My level came back as 25 and my dr said he would of liked it to be 30 or more to say I ovulated. So if I’m not pg this cycle I’m upping my Letrozole to 5mg. Does 25 seem like I ovulated?

Tia x