@sarcasticowl I had a history of thin lining, negative cycles, and canceled cycles and have borderline PCOS. My RE put me on metformin and a supplement (Ovasitol) back in April which helps regulate the way the hormones and insulin are absorbed and regulated into the body. She said it could take a few months for my body to get used to those two new things. I ended up taking a break over the summer and tried another transfer in October. It was my best lining to date (just over a 6 but it was the best I've ever done and looked "fantastic" with the triple stripe) and *****TW*****
it ended up being successful and I'm now almost 10 weeks. It might be worth asking about the supplement as well. I order it online with a code from my RE's office and I think it's about $78 for three months, so not the most expensive thing compared to all the other drugs we have to order. It's a powder that you mix into any drink twice daily. I have no idea if it was the metformin, the Ovasitol, or something completely random that worked this last transfer. Fingers crossed your next transfer will be the one!!