Hi! I'm currently waiting to start a FET after egg collection last month where they could not do a fresh transfer due to small amount of fluid in cavity and thin lining of 5mm. This month they asked to scan on day 9 whilst I'm not on any medication to see if fluid was still there, and it was, just outside the cavity. I'm so worried it will be there next month when I start taking meds for the frozen transfer. Has anybody had any experience with this?