Ladies!! Your input is greatly needed...

Erica
Me and my guy had unprotected sex on the 10th and recently I've been feeling tired, nausea, cramping, and an increase in my appetite. My period isn't due till the 27th but my nerves got to me and I caved and took a pregnancy test this afternoon that came out negative. However, I'm not sure if I took the test too prematurely seeing as I still have the same symptoms. Should I retest or just wait it out and see if my period makes an appearance?