After the second encounter, which involved sex without a condom, she claims to have found a pea-sized bump on her vagina and a similar lump on her cheek, reports TMZ.
She claims to have suffered “extreme and debilitating mental, emotional and physical distress and anguish, humiliation and embarrassment.” Just days before she filed the lawsuit she reportedly said she wasn't worried about getting the virus as Usher had always worn protection, seemingly contradicting her claims in court documents.
The multi-award winning singer-songwriter and performer has earned his place in music history, though 2017 has been a troubling year for him.
Unlike Bieber, Usher failed to turn up for Ariana Grande's One Love Manchester concert in June 2017, later saying he was taking his son to "diabetes camp" instead.
Usher has been married twice – first tying-the-knot in 2007 to stylist Tameka Foster, but they divorced in 2009.
Another woman, Laura Helm, is suing the star for £15million and claims he "obsessively showered before and after sex and was scared to ejaculate in her presence".
The New Orleans jazz musician, who is one of a number of people suing the R&B artist, says she slept with the pop icon on two separate occasions.