ovulation bleeding, implantation bleeding, or another period coming on early?

so 4 weeks ago I had my period, then a couple days later I had to take Plan B pill, then 2 weeks after that I had my period again (because I know it messes with your period) then now two weeks after that period I am having vaginal discharge that was brown on day 1 and now on day 4 it is red and mucous like. It is right around ovulation time since I am suppose to be getting my period in two weeks, so I was wondering if it is ovulation or is it another period that will be coming again, early 2 weeks like the last one??