If on progesterone inserts or jabs, can start testing with hpt as early as from d8, counting from embyro age. That is when implantatiom happens. So if is at KKH, ET is d2 embyro. So 6 days later can start testing. That is the time KKH asked patients to do progesterone BT to see if progesterone level is sufficient to support pregnancy if implantation is successful. After implantation at abt d8, hcg will start to increase daily if pregnant. Those sisters in 2ww would be able to Verify n count the days fr ET of embyro day 2 to P BT.
That means hpt can pick up hcg as early as d8. In my Previous FET, I detected v faint line on D9. Of course some sisters can detect later at d10-d12. That is why pte hospitals such as raffles test hpt on d14 from ET (not 14dpt) coz implantation usually is fr d8-d12 from ovulation date counted as d1. For ivf, ER=d1=ovulation. In KKH ET=d2/3.
Those on pregnyl jabs cannot test so early coz pregnyl is hcg. So even if not successful hpt will still give false positive. So these sisters can only test 48hrs after last pregnyl jab earliest. Ie d13/14 counting ET as day 2. By then, hcg from pregnyl jabs shld be gone from the body, hpt if positive will be caused by hcg produced from pregnancy.
Those with KKH, Bhcg BT is on d17/18 counting from ET which is day 2/3 age of embyro. A sister said she tested positive at 100 over bhcg 14dpt. If she is with KKH that means d17 at day 3 transfer.
I m just wan to put things into a more accurate. so dun mind my kapo ness.