Am i emo

Lately I've been randomly disassociating with life like honestly today I was just in my classroom staring into the whiteboard for 3 hours and it scared my professor cus of the fact I didn't move once and asked if I was okay. I told her yes but she was still mildly concerned and asked if it was bec of my "thing" I told her I'm okay with this but I told my bf abt this and he jokingly said "uh yeah you've been really emo lately." I asked him how and it's bec there will be just times I'll zone out and my face looks like it's traumatised. It worried him a little bit he says but he reads my daily journals so he thinks I'm just slowly coping with things.

I just wanted to ask if simply disassociating like that is emo bec I just don't understand why ppl ask if I'm okay im just thinking abt things very deeply. Is this such a bad thing? I thought most ppl zone out