Fertility clinic question

Chey

Hi! I posted this same thing in a different group and realized this one might be better. My husband and I are starting <a href="https://glowing.com/glow-fertility-program">ivf</a> in sept. My dr wanted me to lose 10lbs and I have lost those lbs. my period is due tomorrow. But my question is, is should I call and tell them I lost 10lbs or just call at the start of my period?