Help?

Tiffany • Mommy To Baby Boy Daxton 11/25/17 and Baby girl Elianna 11/25/18. Yup my babies share the same birthday 🥰 Baby #3 Raelynn 💖 due 02/23/20

I just found out I’m pregnant again, but glow is going by my old due date from my first baby. I changed it to pregnant and it said my new due date, but it’s saying I’m 69 weeks pregnant lol because it’s going off of my 1st pregnancy still. How do I fix this???