Am I bing over sensitive?

So my boyfriends mom hasn't been around our son but 4 times since his birth. She's been wilding out and hanging with people and doing things we just don't want around our baby he's only 3 months. Anyways we were at my boyfriends grandparents house the other day and his mom stopped by unexpectedly and for one she tries to get his attention by clapping very loudly and yelling his name and hitting the couch which annoys me but then when he doesn't look at her and just stares at me she says you always look at your mom you have all day to look at her look at me and then proceeds to tell me to hide my face or put a blanket over my face. Am I being over sensitive cause that just really ugh 😩🙄😠