Annoyed with colleague

I work in a job that requires me to carry heavy things so I had to inform my colleagues about my pregnancy so that they can understand my situation. But as days go by, I get annoyed by this one colleague who shared about her abortion in her first trimester and whom constantly nags at me about what I can or cannot eat. Honestly, I’ve actually been eating really healthily since my pregnancy. And every time I bring up about what this app allows me to eat/not eat, she just ignore whatever I say. I’m very stressed out and I just want to shut her off.