Visit the Laboratory in-game to ensure the pregnancy timer is not accidentally "Paused" via the control terminal. If you'd like, I can help you with: Finding a full walkthrough for the Laboratory area.
For modded versions, check your game launcher’s "Data Files" section to ensure the .esp is ticked, or the mod will not load. Community Experiences lisette+priestess+of+spring+pregnancy+v111+install
The specific report for "Lisette Priestess of Spring" Pregnancy v1.11. Events like the "Blessing of the Grove" are time-sensitive. 13.233.160.11 Lisette Priestess Of Spring Pregnancy V111 [SAFE] Visit the Laboratory in-game to ensure the pregnancy