spotting at 7 weeks

Allison
hi everyone. I'm 7 weeks today, and I started spotting a tiny bit. not bright red, but enough to make me nervous (had a mc in January so I'm very cautious this time around). I called my doc and they told me because of my blood type (a neg) and because of my mc that I need a rogham?? shot. does anyone have any thoughts? help! I'm so scared, and no one is answering my questions. thanks everyone!!