5 weeks and 3 days with brown spotting

Miranda
Okay guys! I had a miscarriage at 16 weeks August 2016. And this is the first time I have been pregnant since. So I am very cautious with this one. I have been experiencing brown spotting only when I wipe. Is this normal? Most posts I see say it's old blood from implantation. Has any other moms experienced such? Just needing some reassurance. Thanks!!