Oh, I totally understand how nerve-wracking this is! The anxiety of stopping any IVF medicine is so real. Usually, doctors stop it around 10-12 weeks once the placenta is ready, but please don't stop it on your own until your doctor explicitly tells you to do so.
Look, IVF pregnancies rely heavily on external progesterone like Duphaston in the first trimester. Usually, after 11 or 12 weeks, the placenta takes over and the doc will stop or taper it. Never take the decision to stop it yourself, always wait for your clinic's green light.
I know exactly how scary it feels, but trust your doctor. I was on Duphaston till 12 weeks while puking my guts out every single day. Once the doctor checked the ultrasound and saw the placenta was fully ready, they safely stopped it.
Mera bhi doctor ne 11th week me band karwaya tha jab placenta ban gaya tha. Aap please khud se mat band karna, doctor se pooch kar hi stop karna. Sab acha hoga, beta.
With my twins, I was popping Duphaston like candies! Doctors usually stop it between 10 to 12 weeks because by then the placenta takes over. But seriously, do not guess this, ask your doctor first—twins or single, their word is final!