Brown discharge

Anyone else have brown discharge every cycle? I have it after my period is over and it seems to last for a couple wks after. I know it's norm for a few days after my period but I have last longer. I've asked my Dr about it and he's never worried about it. I've looked online and can't find any definitive answers as to if it's normal or a problem. I possibly have pcos (per my dr) but the only symptom of that I have is not ovulating regularly. I wonder if the discharge is connected. Can't find any info on that. I have regular periods that are every 27-30 days and last 5-7 days. No other issues really. Have been TTC for 1 yr. I'm 30. I have noticed I always have this brown discharge for like 2 wks after my period. Appreciate any comments or info!