Progesterone 1 dpo

My doctor sent me to get a progesterone check 1dpo to make sure I ovulated. Not really sure why it couldn’t wait until at least 7dpo but anyways. It was 2.6ng. I haven’t heard back from her yet to know if I ovulated or not. With it being one day after ovulation I’m not sure what my level should be. Any insight? Thanks!