I just had a miscarriage in July 2010,and I took the rogaine shot and now Im pregnant again. How long does the shot last and do I need another shot since Im pregnant again.

Rogaine is for men's hair loss issues. What you mean is Rhogam.

You will get another Rhogam shot at 28 weeks of pregnancy, and another one after delivery of the baby.

How long do it last in the body rhogam

I have to get rhogam with my pregnancy to I think it last 6 months I think about not 100% sure