Tylenol safe enough?

Hello! So, I have terrible migraines. Ever since I am pregnant (9weeks) I have had a headache almost everyday. Once or twice a day I have to take tylenol to cut it down and not make it raise towards the migraine. 2wice Ive has Migraine and has to take the tylenol like the instructions marked. I have been spotting and cramping for the last 2 days so now I am scared that maybe the tylenol is not safe the way I am taking it. I am scared it might be a danger for my baby.. I take extra strength since my nurse said due to my migraines that would work best.

What should I do?