An 18-year-old recent Massachusetts high school graduate, who is about three months pregnant, disappeared after an argument with her boyfriend.

Kylee Monteiro, 18, was last seen on Aug. 7 near County Street in Rehoboth — about 50 miles from Boston, according to The Rehoboth Police Department.

Monteiro’s family said they last heard from her through a text message on the day she disappeared, and they feared for her safety, WCVB 5 reported . 4

“The last known time when we heard her voice was Wednesday night,” Monteiro’s sister, Faith, told the outlet.

A friend of Monteiro’s also expressed concern for her well-being, saying her last contact felt unsettling.

“She was like ‘I don’t feel safe right now something’s not right.’ I tried talking with her after that, and she just stopped r

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