my girlfriend is pregnant and was on the nuvaring, the first day of her lmp was 6 jul and last day 11 july, she slept with another man 17 jul (the last time she slept with him) and then the 19 july started taking flagyl until the 27 jul, i slept with her the 3 aug. Her ultrasound at 16w said the due date was 26 apr. who is mostlikey the father?
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Age: 22
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