Aww congrats, hoping it's a baby girl din! The midwife's assessment is encouraging, pero honestly the "nub theory" and gender guessing at 19 weeks ay kaunting 50/50 pa talaga, mas clear sya around 20-22 weeks kung makikita ng ultrasound tech ang genitals properly, kaya excited na lang tayo for the clearer scan soon! One of my mum friends thought she was having a girl based on early scans, tapos boy pala, pero some of us have been spot-on din, so it's really a guessing game at this stage hehe. The app discrepancy is normal kaya, dating of pregnancy can shift a bit depending on cycle regularity and when exactly ovulation happened, so walang alalahanin dyan. Enjoy the strong heartbeat moment, yan ang best part ng pregnancy!