Patiently Waiting......SIKKKEEE!!

AF is due 9/14 and I am about to cave into taking a test. I've had mild cramps for about a week and as the days get closer to AF it has became a little bit more noticeable. My eating habits has changed, def been eating more than usual. Plus I've been nauseous off and on (for about 20 seconds) but not to the point where I actually vomit. Not sure if these are AF symptoms or pregnancy but I'm thinking about taking a clear blue test to show how many weeks I am if I am pregnant. Only thing stopping me is the fear of getting a BFN.