3 months late & negative test results?My period is three months late, I've take a few home pregnancy tests and they all came out negative. I recently went to the doctors cause I had a small bald spot on my head& they said it might be due to stress, depression, or it could be that I'm pregnant. (I've had a bald spot on my head before and it was due to stress, nothing serious). Well I got lab work done & everything came back normal or negative! I've noticed I have white, odorless discharge & I've gotten nauseous twice but not to the point where I want to throw up; I thought it'd be something I ate. I couldn't tell if I am pregnant or not cause I didn't experience any "side effects" with my first & only pregnancy but that test came out positive so I knew I was pregnant then. I don't know what's wrong this time. Has anyone gone through the same or similar situation? What was the outcome? And why won't the blood work show what's wrong? Should I be worried?