How did YOU know you were pregnant?

Ha

Besides a missed period - how did you guys PERSONALLY know you were pregnant? There are so many "early symptoms" lists but so many actual symptoms that aren't on there. My mom knew she was pregnant with me when she took a drink of cherry coke (her favorite drink) and it made her puke. She immediately knew she needed to test.

I'm currently 8 days late for my period (I've never been later than 5 days!) and took a test yesterday and got a BFN. I've been having odd symptoms and NO PMS symptoms at all. Is it still to early to get a BFP or is there still a chance for positive?