Miscarriage then spotting 7dpo

Kirsty
I had a miscarriage on March 25th at ten weeks pregnant with my first baby (silent miscarriage, no heartbeat at scan then took drugs to miscarry) I was desperate to try again so rather than waiting a cycle as the doctor recommended we have been actively trying. I got a positive opk on 14th June (7 days ago) and have had brown discharge yesterday and today. I didn't have implantation bleeding with my first pregnancy, could this be what it is? Or could it be my period. Any replies from people who have had a similar experience or know with these dates is it is more likely period, implantation or a problem would be much appreciated. Dying for a bfp, I am going to test on Saturday morning only 4 days to go X