My periods aren’t regular so I can’t work on that, does anyone know if this is my period on it’s way or implantation bleeding? I’ve been feeling really nauseous, hot flushes, lightheaded and my boobs are aching, also noticed around them has became rather dark, my nipples also constantly as if they are hard and wont go down, took a test on fri and it was BFN, should I keep testing or what should I do?😫😫