Body language has a pretty loud voice. I am very often not connected to emotions, many of mine seem to be held by others parts of me. Sometimes I can feel them around, sometimes I don't. Strong emotion holders are very separate in me. I can go from 0 emotion to having a part come out at the 100 end, then switch around again and I am back with nothing but curiosity and wonderment at how that whole switchy thing works. Other times I don't feel in the slightest bit sad but will be in the body as it is consumed by wretched sobs that I have no connection to at all except for the fact that it is apparently MY body that is producing them. My point being in dissociative disorders strong emotions are very often dissociated, and in dissociative disorders it often happens that there is not a clear distinction between who is out and who feels what or who is in control or, well, anything at all really!
So maybe you could be curious about these little cues that others are offering you. If someone says you sound angry or snippy maybe you could accept that as feedback and just sit and think and feel for a second and muse about whether that person is picking up on some emotion or experience that is not yet in your awareness. Because really, it could be one of two things. Maybe they are simply misinterpreting you or maybe some part of you inside is trying to express themselves but you just can't hear them yet.