Tylenol linked to ADHD?

*THIS IS NOT A DEBATE, OR YOUR OPINION, THIS IS TO SHARE WHAT MY DOCTOR TOLD ME*

My doctor told me something really interesting today when I went in for my appointment. I asked her about taking Tylenol for pain(I haven't taken ANY medication this whole pregnancy by the way) because I couldn't handle it anymore. She said yes BUT only take one and if it doesnt help to try other things because within the last few years they've research and have linked taking Tylenol while being pregnant to kids having ADHD. I thought that was very interesting and that I should share for those who didn't know!