BFP 16DPO bit of brown spotting argh

April

So AF was due 28/10. Woke up with bit of brown spotting so tested anyway to make sure and got this! Too scared to do another FRER (I had chemical in feb) and IC are less sensitive than FRER... eeek. Spotting bad stopped but when I check CP bit of water with tinge of brown. Is this normal??? DR appointment tomorrow