i am 11 days late today, took a test on the 7th day of being late and it was BFN

then yesterday i had a small amount of blood about the size of a 50p piece appear it was brown/dark reddish in colour, could this be spotting or do you think its AF? please help i'm going out of my mind x
other symptoms i have are: burning up, heartburn, dizzy spells, nausea spells, headaches, i also keep noticing the ends of my nipples are dark purple sometimes when i check them (sorry don't no the proper name for them)
