United Kingdom, Oct. 3 -- Pete Davidson's pregnant girlfriend Elsie Hewitt feared she was infertile after being diagnosed with endometriosis.

The Saturday Night Live star and his partner are expecting their first child together and Elsie has now revealed she spent years battling the painful condition - in which cells similar to those in the lining of the uterus grow in other parts of the body - and feared she would never have children until she underwent surgery to ease her symptoms and "preserve" her fertility.

She told PEOPLE: "I was 100 per cent convinced that I was infertile and not going to be able to have kids. So I do think a big part of why I opted for the surgery was, obviously first and foremost my symptoms, but second to pres...