I’m freaking out, I read last night it was ok for me to take NyQuil cause I have a terrible cold.…

You should be fine. Just dont take it again. Unless if you took ot several times then maybe call your ob.

My obgyn said as long as you get it with out alcohol in it but benadryl would work just the same he so I used benadryl to be safe. He's been in practice 20 + years