my one sister in law (the same one I mentioned before who was convinced I was going to be weird about my nephew bc my brother is younger than I am and had kids first) was ALSO weird in this EXACT way about my actual first pregnancy

she announced hers when I was 6 weeks along. I said oh congrats! that's awesome! we're trying ourselves (because i was NOT READY to tell anyone). she then decided that the only reason i was trying was pathological jealousy of her having 2 kids. I wonder sometimes if she ever did the math on the birthdates and figured out I couldn't possibly have known.