help pleaseee

so i’m late for my period by 4 days and had sex about 2 weeks ago.. well today i went to the restroom and i have been having. thick white discharge but today it was this odd brown color (ik that sounds weird but i promise i didn’t shit myself. this was from my vagina.) because when i wiped it was almost a brownish red color. but anyways does anyone know what this is ? could it have just been a late period that’s starting weird ? or could this be a possible start to a pregnancy ? help please !!

UPDATE: it’s now a redder and more water like consistency. thoughts ???

UPDATE 2: this is from the next morning and it was really red. does this seem like it’s a CP, implantation, or jut a late period ??