Am I toxic?

So basically sometimes when i’m upset, I get a little more quiet and do one word responses when my partner and i are going about our day. I try hard to be okay and be normal but def am noticeably down. im a big thinker and sometimes instead of saying things bother me right away, I think about it for awhile. I get a little cold towards my partner.

I recently came across this thing called “stonewalling” and it’s when a partner completely shuts down in conflict and it’s an emotionally abusive manipulative tactic. reading this made me nervous cuz I never want to be emotionally abusive to my partner.

I think my personality just causes me to get really quiet and less cuddly. i’ve never like flat out ignored him or something. idk, im getting worried that i’m toxic ? I don’t even know if what i’m doing is stonewalling but it’s not purposeful. I hope it’s not the same thing.