Your probably just sick....and sometimes when you get sick it can delay your period...
But if you think you might be pregnant then take a test?
I've never had them as pregnancy symptoms. But, yeah if you had unprotected sex and your period is late, no harm in doing a test.
Well you could just be getting sick ! Like yeah, some of those things could be pregnancy symptoms but obviously it's not conclusive. Just take a test and good luck (: