Does it seem fishy?

My husband looked up a woman on Instagram, within the past month. When I asked who she was, he said “idk baby, I haven’t looked anyone up on Instagram in a while” and then proceeded to immediately change the subject. I asked again and he again said he didn’t know and told me to stop being sad because I don’t have anything to be upset about (he didn’t say this in a rude way btw). Should I be concerned or is my pregnancy hormones just making me trip out?