Overreacting???

Hello ladies, I need another opinion please. I am currently 6w5d and we haven’t had our first ultrasound yet so I asked my partner not to tell everyone yet as I wanted to wait. I also let him know that I had organised a family photo shoot with all of our children (blended family of 5) to announce our pregnancy as I thought it would be nice and it is our first child together. Anyway, this morning when I went on Facebook, he posted that he was going to be a dad again!!! I got super upset and he couldn’t understand why and took the post down without even acknowledging the plans that I had already made for the photos. I feel like this happens so often where I will tell him something or ask something and he literally doesn’t pay attention and always does the opposite to what I’ve asked or said. Am I just overreacting and need to chill out or do I have reason to be upset with this?