Could I Be Pregnant???

My period is 6 days late as of today. All weekend and this week I have been having light pink spotting off and on and it was super light. On Tuesday I had a watery gush of this light pink/light brown discharge. But after I wiped it all away that was it. Yesterday morning I started spotting it was light red and then it stopped. I went shopping came home and used the bathroom and when I wiped it was there again but a little more so I put a tampon in thinking my period has started. But when I went to change it it was barely nothing on there like I wasted a tampon. It stopped and now this morning it started again but it doesn’t even fill a tampon nor is it enough to drop onto a panty liner. It’s a little more than spotting though. Like a light period. I’ve tested and the were both negative. This is driving me crazy! And baby center is just making it worse!