Bf watching girls IG stories

I was looking through my boyfriends IG and I went to look up a baby page he follows and when I typed the first letter a woman’s ig popped up and I could see that he saw her story. She posts booty pics and swim wear and has a really nice body. Idk why but I started crying because I am 30 weeks pregnant and having body image issues. I’ve always struggled with my weight and I just started crying. I started typing in random letters and other girls pages would pop up and I saw that he already watched their stories. Even watched a story of a girl he use to flirt with before him and I got together. He doesn’t follow them. Just watched their stories. He doesn’t like any pics. Idk what to do. I feel so upset.