Okay so I got a list of medications that are okay during pregnancy. Part of it was "wait till after the first trimester" and Tylenol Extra Strength was one of them but I've been getting headaches and my dr told me it was okay to go ahead and take it as/when needed. Tylenol PM is also one that is listed as "wait till after the first trimester". The only things that get rid of the bad headaches for me (pre-pregnancy) was tylenol pm and going to bed. My question is, if he said that extra strength tylenol is okay does that mean I can go ahead and take tylenol pm too? I have a horrible headache tonight and I was wondering what if I just take one tylenol pm and one regular instead of two tylenol pm?