Progesterone 7 dpo

Hi all! I’m ttc #2. I had my blood drawn 7dpo to check for my progesterone level to see if I was ovulating. My level came back at 7.4. My re says that does confirm ovulation but isn’t especially high. She said if I become pregnant they will check again and start me on supplementation if needed (I did use progesterone along with femara and a trigger shot for baby #1). Has anyone been told something similar or conceives with a progesterone that low? Thank you!