15 week question... Help please

Desirea • Mrs.Gutierrez 2017💍😍 mommy of soon to be two! 💙💜
 Ok so the app says in 15 weeks and some odd days and today I caught my little baby pushing out on camera😳 she still is pushing out as I'm writing this! I just wanted to see if maybe anyone has had this happen this early or maybe my doctor was off about my due date and baby is further along then I think?