Baby Shower Anxiety

I'm a highly anxious person to begin with, and I have a very big opinionated family as does my SO. I try to keep to myself at most family events and not draw too much attention, however I don't see that as possible at my shower. I told my SO I wasn't going if he didn't come. Mainly to hold my hand and tell me how cute things are and distract me. My mother is very outgoing and can be a little abrasive, his mother is the same, so it's just a lot for me to take in. He is fine with coming or not. His mother has made a point to tell me how ridiculous that is and he shouldn't be there until the very end. What do you think? Am I being ridiculous? I get anxiety just thinking about it, and he's my comfort zone and effortlessly radiates that positive vibe to make things manageable. But now his mother has made me feel like a drama queen.