Usher's 2nd accuser claims she now HAS herpes & wants $40M not $10M

The woman who came forward and accused Usher of exposing her to Herpes after it was leaked that he settled a Herpes-related lawsuit in 2012 now says she HAS Herpes.

She’s increased her lawsuit from $10 to $40 million.

The woman, in new legal docs filed as Jane Doe, says she was devastated when she got the results Saturday. The woman said she’d gone to get tested immediately after hearing reports Usher admitted in docs he has herpes simplex 2.

TMZ broke the story … she sued Usher for $10 million after she says they had unprotected sex earlier this year. She now wants at least $20 million for emotional harm and medical bills, plus another $20 million in punitive damages.

We’ve reached out to Usher’s camp, so far no word back.