Related pine topic:
Several online sources note that cattle and deer abort when they eat a lot of pine needles in the third trimester. Is this a concern for humans considering pine needle tea?
Back in South Dakota I was told by Native Americans there that they would a very struff pine needle tea to induce abortions. This same warning is on many commercial packages of pine tea. However, I have not seen any scientific studies on this subject. I put it in the "procede with caution" catagory.
-Blast