I was looking at something on my husbands phone (he was showing me a video)

and a message from “Anna” (a coworker) popped up with hearts so obviously I was like 🤨. He then showed me the text messages between them. Honestly the convo they had wasn’t bad. It was about work, and the hearts was sent after she said she was switching shifts. My husband said he agreed the way she texted was weird, but then showed me a group chat with his entire office and she texted like that with everyone. It still pissed me off because I don’t think anyone should message someone who is married that way and I was mad he didn’t say anything. I told him to tell her I didn’t appreciate it and he agreed. Should I still be upset? Or just let it go... maybe it’s the pregnant hormones 🤷🏼‍♀️