Could j be pregnant

Hidie
Hi I was late on my period then started but only for 3 days then stopped now I'm bleeding elite but it more bright red I will put up a picture I have bin exspereancing felling sick bin sick 1ns felling faint and dizzy and verry tied for 2 days bin very emoshanal crying for no reson can any1 help me and I don't no what this brown thing is ever ??????