Question for everyone please help

Suzie

Ok so AF isn’t due till the 9th, ovulated the 22/23 and last week I felt nauseous and my boobs hurt and a metal taste in my mouth. Now this week I have lower back cramps and brown spotting, still tired and my nipples are moist in a way. Is there a chance I could be pregnant or is it not my month? Has anyone had these symptoms and still been pregnant?