Hello! Please tell me about anti-Rh immunoglobulin. Who got it during …

Hello! Please tell me about anti-Rh immunoglobulin. Who got it during the first pregnancy, who during the second, who had antibodies? First pregnancy, my husband is 4+, I'm 1- — absolute incompatibility ? No antibodies, everything's fine, but they suggest giving it at 28 weeks and after birth so there won't be problems during a second pregnancy. How did you handle an Rh conflict? )