First of all there is a big difference between cedar tea and pine needle tea and if we are going to go into the pregnancy debate … then lets go there. Many teas, such as the raspberry leaf tea can cause miscarriage if consumed in the first two trimesters. There are a multitude of other teas, commercially available, that CANNOT be consumed during pregnancy.
If you need to know what is safe during pregnancy when it comes to tea… here is a reliable article….
Oh… and if Jay is pregnant then, yes, cedar tea could be an issue.

