6 days of brown spotting instead of a period

Hello ladies,

I started a little bit of brown spotting the day before I was meant to start my period so I thought my period was starting. It’s been 6 days now and I’ve still got the old brown blood but not once have I filled a pad. I can only see it once I wipe. My husband and I have been trying for the past 6 months but nothing yet. I took a test the second day after I saw the spotting/period and it was negative. I’m just really confused as to what happened to my period and if it even is a period or am I just spotting still? If anyone’s every experienced anything like this please let me know xx