Unintended Pregnancy Reduction Act of 2007 - Amends title XIX (Medicaid) of the Social Security Act to: (1 ) include women who are not pregnant but who meet certain income eligibility standards in a mandatory categorically needy group for family planning services purposes; (2) allow a state Medicaid plan to provide for making medical assistance available to such individuals during a presumptive eligibility period; and (3) prohibit a state from providing for medical assistance through enrollment of an individual with benchmark coverage or benchmark-equivalent coverage unless it includes certain family planning services and supplies.