Had bleeding with my first and got the RH shot at 10 weeks then got the shot again at 28 weeks and again when my daughter was born :) this time around so far so good!
@tiffr5, I did have one miscarriage in February but they couldn't say for sure if it was caused by my blood type. I was just a couple days shy of 9 weeks and the baby only measured 6 weeks so they said it could have been anything. I'm on my 5th successful pregnancy though and it hasn't complicated any of them.
Yes your RH-, you will get a shot at 28 weeks and then if your baby has a positive blood type you will get another shot after you have the baby. I've gotten the shot 8 times so far and every time I've gotten it in the butt it didn't hurt but I've heard several people say it hurts if they give it to you in your arm.