IVF and thin lining??

Me

Has anyone experienced a thin lining with <a href="https://glowing.com/glow-fertility-program">IVF</a> and the RE was able to correct it?? I completed my first <a href="https://glowing.com/glow-fertility-program">IUI</a> 2 weeks ago and my lining only thickened to a 4.3

I’ve done estrogen vaginally, baby aspirin, and POM juice. My test date is tomorrow but I’m thinking it’s negative. (NO pregnancy symptoms). I’m almost 41 so the RE was only going to do 1 or 2 <a href="https://glowing.com/glow-fertility-program">IUI</a> before moving on to <a href="https://glowing.com/glow-fertility-program">IVF</a>. Anyone with good <a href="https://glowing.com/glow-fertility-program">IVF</a> results and a thin lining??