Due Date Question

N • TTC #2, 1st IVF Cycle, diagnosis: severe endo & adenomyosis. 2 mc and 4 surgeries in 2 years, I am finally getting to continue IVF. SET/FET 12/16/19

When do you think it’s safe to confirm your due date? Mine was 9/2 at 6 & 7 weeks. Then with baby growth, it changed to 8/31 at 9 weeks. 🙈🙆🏽‍♀️🤷🏽‍♀️ Which birth month do I join on Glow? August or September? Lol