Lena was previously forced to cancel her promotion of the latest series of 'Girls' because of her endometriosis, a condition that can lead to infertility by causing tissue to grow outside the uterus.
More from Spy:
• Parris Goebel celebrates new milestone
• Kim K's nude selfie - fans react
Writing on Facebook, she explained at the time: "Hey Beloved Pals, I just wanted to let you know that, while I am so excited for Girls to return on Feb 21, I won't be out and about doing press for the new season.
"As many of you know I have endometriosis, a chronic condition that affects approximately 1 in 10 women's reproductive health. I am currently going through a rough patch with the illness and my body (along with my amazing doctors) let me know, in no uncertain terms, that it's time to rest."
- Bang! Showbiz