In IVF, the calculation is very precise based on your embryo transfer date, not your last period. Be careful with your diet from day one itself, especially keeping sugar low.
You can use online IVF calculators where you just put your transfer date and embryo age (Day 3 or Day 5). It automatically tells you your exact week and month, which is super convenient!
Don't break your head over manual calculations. In IVF, the doctor gives you an exact gestational age chart based on your transfer date. Just follow their calendar.
I just had my baby through IVF! My doctor calculated it by taking the transfer date, subtracting the age of the embryo (like 3 or 5 days), and then counting back 2 weeks. It sounds complex but your clinic will give you the exact due date.
For IVF, the calculation is a bit different but your doctor will guide you. Generally, the day of your embryo transfer is counted as week 2 plus the age of the embryo. Take care of yourself.