Pregnant??

My boyfriend and I had sex 2 weeks ago and we used a condom. I’m not on birth control. I thought everything was fine but I was supposed to get my period today and I so far don’t have it. I am getting my usual symptoms of a period: cramps, headaches, etc. but also I have a little cold so I heard being sick affects that too, but I need advise whether I’m overthinking or not. I really hope I am but I need advice! Help!!