I had sex on Oct 21 abs according to my tracker I was ovulation around that time. I was supposed to get my period on Nov 7th but it never came. I am normally pretty regular so I was concerned but didn’t really think anything of it. Well these past few days it still hasn’t came, and I’ve been really nauseous, my back has been hurting. Low sex drive, headache, and I haven’t been wanting food really. And now I have been spotting brown discharge. Not all day it comes and goes, with mild to little cramping. I took a test but he cane out negative. So I’m confused.