4 days late, could I be pregnant??

Might sound stupid but so unsure, I had sex 6/7 days before my period was due it was unprotected and ejaculation did happen, I'm now 4 days late with my period, for a bout a week or so I've been feeling slight pulling pains in my lower abdomen and the whole nausea but starving feeling. Now I've thought of it I've had a lot of pregnancy symptoms I feel like I should take a test but it would be way too soon wouldn't it? And I didn't have sex in my fertile time. 

I'm not normally this late ever sometimes it's a day at max but it doesn't really feel like it is coming either can anyone help? Xx