Irrational Fears During Pregnancy

This is just a rant, I'm having a night of anxiety and its making me mad. I'm having some pain unrelated to my pregnancy. I'm terrified to take the Tylenol we have in the house, because its generic.

I have taken Tylenol a couple of times during my pregnancy and it wasn't a big deal. For some odd reason tonight, I'm petrified. I cried, I stopped myself from taking it, and now I'm just sitting in pain. I cannot get myself to take it. I'll get the medicine out, put it in my hand and then put it back in the bottle. My husband held my hand while I was trying to take it and stayed up with me. I never took it and he needed to go to bed.

I feel stupid. I'm in my third trimester. I'm just absolutely annoyed with myself. I'm not sure if anyone can relate. Yes, I have a therapist and my doctor is aware. I'm doing the best I can, but this random fear out of nowhere has me stumped tonight.