AITAH for Getting Upset Over a Comment My Boyfriend Left Under Another Girl's Instagram Post

I (31f) have been with my boyfriend (30m) for almost two years now but we have known each other since we were kids. I am currently 17 weeks pregnant with his baby so I am not sure if I'm right in feeling upset or if it's just the pregnancy hormones. Today I was doom scrolling on all my social media accounts and decided to check my Instagram account. I noticed that I had some notifications so I checked them and saw that my boyfriend had commented on a friend of his post. I open the notification and he had commented on a post where the friend in question only has a tee shirt on. His comment was two heart eye emojis, a fire emoji and a heart emoji. All the years I've known him, he has never once commented anything like that on any of my pictures. I feel heartbroken as he knows I am VERY insecure about my looks. I don't know if I should confront him about this so AITAH for getting upset about his comment?