Mother in law rant

I just want to have a little moan and seek some reassurance from people who may understand at a similar stage in post partum to me. Not sure if it’s my hormones or if I’m valid in what I feel. I am 2 weeks pp today and have been to the in laws for tea (as we always did prior to babies arrival on a Monday). I have come away this evening absolutely sobbing. My baby was completely over stimulated and tired and I had just settled him to sleep while we ate. After waking, my partner finished his dinner and tended to the baby who was due a nappy change, my MIL then took the baby out of his arms for a nappy change and upstairs for the nappy change without either of us there. She was gone for 25 minutes. The whole time I felt in a panic and extremely uncomfortable. I tried to hint to my partner I was uncomfortable and wanted my baby back (in front of my FIL and sister in law) without making it too obvious but he didn’t click on to go and fetch my baby back from upstairs. I’m too much of a people pleaser to say something to her but I really don’t feel comfortable with it happening again 😔 am I just hormonal or was it completely inappropriate of my MIL to take my 2 week old baby away from us for 25 minutes for a nappy change?