what's going on?

So, I was supposed to start my period on feb. 25th and end it on feb. 28th. I never started my period so I took a test on March 4th. The test were negative. But I feel like I have been experiencing a few pregnancy symptoms. Did I test too early? I'm supposed to start on the 31st of this month, and if I don't I was going to go see my ob. But should I test again in a week? Or just wait?