Okay so I've been having super abnormal symptoms.. cramping, nausea, sore breasts. I took a test a week ago (at 7DPO) because I was so anxious, waited a couple minutes and nothing came up so I threw it in my night stand. I've been waiting to test again (AF is due in 1 day) and I was just about to throw out my old tests, but my most recent one has a suuuuper faint line. None of my previous tests have that, they're just yellow. Is it just because it's been sitting or did I not wait long enough?! I'm new to this, please help!