I am in that space where my heart is racing and I am deeply ashamed, embarrassed and catastrophizing. I am in the STEM field and I honestly don't know anything. I have lied my way through my master's and I am now in my second yr. I am just not good enough compared to my classmates. 

There is a seminar going on right now and the way it works is that one of us presents while the others comment/send questions. I sent in a question and when it was my turn to get answered, everyone turned and snickered at me. I am confused if it was because it was a blatantly stupid question or they turned and snickered because "my friend is asking a question haha". It was most definitely a very stupid question. I don't deserve to be here. I don't know if I should ask a friend if it was a stupid question because either they'd say yes, it was a stupid question or they'd not say that and then anyway think it. I don't know why I put myself in a position like this. I could have just not taken the seminar but I felt that I need the seminar, I need to learn this. Can someone tell me something I can comfort myself with?