Had my ultrasound and Bloodwork tested a week before FET transfer and the lining was 6mm. Doctor put me on estradiol patch in addition to the 2mg of estradiol pills I already have been taking twice daily for about 2 weeks now to try to grow lining more. I will retest in a week. Has anyone had this happen? Did you go on to have a successful cycle? I've had so many starts and stops with my cycles since December and we are so close now I really need some hope!! Thanks in advance.