TTC am I overreacting?

Ok so my husband and I are TTC for the first time. It’s going on just under 2 months so we are really early into all this. I just got my period a few days ago so obviously I’m not pregnant. Well he shared with his female coworker that I’m not pregnant. I’m a little peeved. Why is he sharing this information with her. It’s none of her business. I feel he is over sharing our business and I’m not comfortable. Am I overreacting? She is married and has a child herself.