With my first son I got the rhogam shot at 27 weeks because I was O- and was told by the doctor I needed it. Well I ended up having a reaction to the shot, I was so sore I couldn't get out of bed and ran a low fever. (I didn't realize that wasn't normal) Once my son was born he had O- blood too, so I didn't have to get the shot. Now I am pregnant again and at 28 weeks I got the rhogam shot once again, I had severe pain in my lower back and upper stomach, I could not move my left arm and I was running a low fever. I was in bed crying I was in so much pain, I called the doctor and they wrote it in my records because it wasn't normal to do that. I am due June 11th, anyway I was looking up online and saw several things that said the shot at 28 weeks isn't necessary, is that true? Did any of you refuse to get the rhogam shot while pregnant? My husband and I are planning on having two more babies after this one and if you don't need it at 28 weeks I am refusing to get the shot again, I don't want to end up having a worse reaction than the first two times.