Ivf progesterone

Hello im 10 weeks tomorrow and pregnant through <a href="https://glowing.com/glow-fertility-program">ivf</a>. So excited but so scared as i only have one week of cyclogest left which gives me extra progesterone. Im scared that wen i stop the pessaries i cud loose baby? Im sure theres lots of people who used them especially with <a href="https://glowing.com/glow-fertility-program">IVF</a> when did u stop using them? X