Advice.. Opinions?!

Samantha
Hey everyone. So I need advice My period was suppose to start on the 2nd of December. I have been a little stressed but nothing out of the regular. My boyfriend and I had sex during ovulation (didn't know at the time, we were in Disneyland that week). And today marks day 5 I'm late. Getting cramps here and there and nauseous out of nowhere. 
Should I get a test? Yes or no