endometrial biopsy recurrent chemicals

Glo

So after my 3rd chemical ended with another chemical which is chemical 3. I messaged my doctor with concerns regarding

<a href="https://glowing.com/glow-fertility-program">IUI</a> working but not sticking. I suggested before going into our 4th we should run tests to see why I keep having chemicals. She stated my thyroids, progesterone are fine and my lining is what they want to see during my flow but she suggested having an endometrial biopsy to see if there’s inflammation or anything preventing me from staying pregnant. Anyone had this? And what were the outcome?