How far along am I?

Does anyone else have a doctor that calculates from the <a href="https://glowing.com/glow-fertility-program">IUI</a> date? I ovulated on day 11 of my cycle (w/ ultrasound verification) and did and <a href="https://glowing.com/glow-fertility-program">iui</a> then. But my doctor has said specifically we are starting the count from the <a href="https://glowing.com/glow-fertility-program">IUI</a> date, not my period date. Is this normal? I’m having such a hard time with apps bc they won’t let me use my <a href="https://glowing.com/glow-fertility-program">iui</a> date.

My last period was Jan 13th

<a href="https://glowing.com/glow-fertility-program">IuI</a> was Jan 23rd