Any A- Blood Type Mamas?

Amanda
Hey ladies! I have a question. When I had my miscarriage in August of last year, I was given the RhoGAM shot due to my negative blood type. I am now almost 5 weeks and I am wondering if I need this shot once again? I've been reading online that it's given around 28 weeks, but I wasn't sure if any of you experienced this? I wasn't planning on making my OBGYN appointment until I was 8 weeks. Thanks :) I just want to be extra cautious!