Prior pregnancy had to take Letrozole to get pregnant: TTC again wondering if I would have the same issue

Hi everyone. My daughter is 14 months and my husband and I are TTC but not putting pressure on ourselves like we did with my daughter. We TTC for around 10 months with her before my DR started doing blood work and checking levels. My progesterone level was low so she gave me letrozole to take on cycle day 3-7. I got pregnant the first round. Just wondering if anyone has a similar story and if you were able to conceive baby #2 on your own or if you had to take the letrozole or clomid on baby 2 as well.

Thank you so much for the advise 😬