AITA for getting up from my chair in the middle of Christmas dinner and shouting "SHUT THE FUCK UP ABOUT MY BODYYYYY" in response to my wife's comment?

I'd like to preface this by saying that my wife is a great woman, we've been married for 10 years and I love this woman more than anything in this world. She's the best thing that ever happened to me and I would never say anything bad about her. I neither have nor want any reason to be angry with her.<br><br>Also before I go into the story itself, I suffer from severe anxiety. It is part of complex PTSD, which I've been diagnosed with as a result of a suicide bombing that happened in my country, which killed my brother and 2 of my closest friends. I was 24 at the time (now 42).<br><br>Now to the story itself:<br><br>Christmas dinner at my in-laws. My wife and I are the first to arrive, and after a while, family starts to trickle in. Aunts, uncles, cousins and their kids, you name it. It's the standard family Christmas celebration. I'm a bit uneasy because there are a lot of people, and because my wife's family is quite...talkative. My wife and her family all have a tendency to say things without thinking about them beforehand, and to be quite blunt, I don't like it.<br><br>The dinner is served and we all sit down. My wife, her sister and a couple of cousins are all seated on the same side of the table as me, with my wife furthest from me. I don't mind that at all, in fact I love it when the women talk to each other and share stories and giggles. I'm more interested in my own beer and the football game on TV behind my wife (for those who don't know, American football).<br><br>My wife's sister suddenly leans over to me and says "Oh my God, you look so different! How long has it been since we last met?". Now I don't have a problem with her asking me this, as we haven't met for over a year. I'm about to answer, but my wife abruptly interrupts me and says "Oh, he looks different all right. Put on a bit of weight, haven't you?"<br><br>Now, I expect my wife to just laugh about it and take it as a joke, but the table falls silent. All the women on my side of the table start staring at me, and I start sweating bullets. My mind starts racing and my heart is pounding in my chest. My anxiety is immediately triggered, and I'm preparing myself for the worst.<br><br>There's a moment of awkward silence, and then I just...lose it. I jump up out of my chair, slam my fist on the table and scream at the top of my lungs "SHUT THE FUCK UP ABOUT MY BODYYYYY".<br><br>The table is immediately silent again. My wife looks like she's about to cry. The other women are either staring at me in horror or trying to get away from me. I'm sweating even more bullets now and my anxiety is completely out of control. I don't know what else to do, other than get up and walk away, and that's exactly what I do.<br><br>My wife comes after me and asks me what's wrong with me and whether I can calm down. But I don't know if I *can* calm down. I'm still shaking like a leaf and my mind is still racing. I decide I've had enough of the dinner and tell her I'm going home. She tries to keep me there, but I tell her I can no longer stay.<br><br>She ends up leaving with me and on the way home, she's crying. She tells me I embarrassed her in front of the family, and that she can't believe I would do something like that at Christmas dinner.<br><br>When we get home, she immediately goes to bed and doesn't say another word to me.<br><br>So now I'm sitting here with the feeling that I'm the AH. Was I really in the wrong? Shouldn't she have known better than to comment on my body?