Kirsty Skinner from Heckington, near Sleaford, says she feared she would die when she was sent home from Lincoln County Hospital, only to be sent back by her GP the next day when she then required a five hour operation for appendicitis.
She has complained to the hospital, asking managers to review their policies and procedures. The hospital has apologised and says it "takes the dignity of its patients very seriously and continually strives to improve this."
Ms Skinner, who has an 11-year-old daughter, says her long recovery, since last August, has turned her life upside down - and she still requires further surgery for a hernia.
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Quite cloudy but dry