A pregnant mother who is Rh negative had a suspected miscarriage early this morning. Her LMP was 8 weeks ago. Which of the following statements about administration of Rhogam (anti-D immune globulin) is correct?
1) She does not need Rhogam
2) She should receive Rhogam now
3) She only needs Rhogam if miscarriage occurs in the 2nd trimester
4) She only needs Rhogam if miscarriage occurs in the 3rd trimester