Pregnant with Rainbow baby but...

So I am currently 9 weeks 4 days pregnant with our second rainbow baby and I am wondering if anyone else has wiped and had bloody discharge? I have had it now three times and went to the ER the first two times because it scared me a lot. I have had 4 miscarriages before and am considered prone to getting them.

Is it normal to continuously have Bloody discharge while in your first trimester? I never had it with our first rainbow baby so I am concerned. The check up on Dec. 27th showed growth as well as a strong heart beat (171) but still anxious.

My next appointment until the 26th.