Tylenol 21 weeks

I’ve been having trouble sleeping bc I’m miserable I’ve had a sore throat , stuffy nose & sinus headache the past few days. I went to er this morning bc I felt terrible couldn’t sleep and they gave me 2 tylenol at 7 am , I went to the store bought some of the Tylenol it’s the 500 mg , can I take some now or is that too much in a day?? I had 2 of the 500 mg this morning st the doctors , should I take some now so I can get some sleep?? I really can’t sleep bc the drainage is hurting my throat and waking me up and I can’t stop sneezing and I just feel terrible. But I don’t wanna take too much Tylenol I’m weird about taking anything in pregnancy but this sickness is stressing me out I don’t want to put stress on baby either.