I had IUI this cycle and now waiting for test date. I am confused if pregnancy weeks are counted from IUI day or last period. Anyone here conceived after IUI and can explain?
I know this counting phase feels endless, been there. Usually they count from the IUI day almost like ovulation, and the clinic calculates your weeks from there or adjust by scan. Your doc is the best person to confirm the exact dating.
Dont worry too much about doing the math urself. The fertility clinic notes the IUI date and your first scan will tell the weeks clearly. Just go for that early scan.
My doctor explained it like this, they take the IUI date roughly as ovulation, then add 2 weeks back to set the LMP equivalent. The first ultrasound usually fixes the proper due date, so dont stress about manual maths.
After my IUI the clinic kept track of dates for me, I didnt calculate myself. With PCOS my cycles were all over so honestly the scan dating was way more accurate than any counting.