Not really sure, I think if your pregnant it would show up by now, My pregnancy discharge didnt start to show up until I was at least 2 weeks late, plus pregnancy discharge for me at least started out looking like ewcm mixed with a thick-thin creamy discharge, and it would come and go, some days I would be really dry which was unusually for my cycle, and then another day it would be really alot of discharge, try using first morning urine only, any pregnancy test would show a clear postive by now, Good luck :)
you might have ovulated later then you thought causing your period to be late. give it a few more days.