Period

So my period is 2.5 weeks late, I have taken multiple pregnancy test all negative and had blood tested negative as well. I know my doctor told me that from the workouts I've been doing 5 days a week my period would he delayed due to body adjusting. I'm not stressed out much. But my last period was delayed by a week due to the working out.

But today I went to the bathroom and had this so is this just normal does this mean my period is going to come soon since I haven't gotten one since December