Possible miscarriage?

I would be 5 weeks 3 days today,last night had some very light pink discharge. On and off today the same and then darker brown discharge. Could this be one? I’ve never had one before so I don’t exactly know. I haven’t been to the doctor yet or anything for this pregnancy. The first test was the day I found out and the second test was this morning within the 3 minute window but before 5 minutes was up. I’m not bleeding or cramping heavy or at all that I can tell so I’m a little lost