Period is late?

So my period is late by a couple days. A little over two weeks ago my bf and I tried having sex for our first time as a couple and had some issues performing due to how nervous I was so we stopped. Protection was used. My period is two days late w/ no pms symptoms aside from tender breasts. I usually have a pizza face, am eating my weight in chocolate and cramp for a week prior to my period. None of these have happened as of yet. Has anyone else experienced this? Should I take a test? and if so at what point?