I Recently Had Unprotected Sex. I Did Not Have My

I recently had unprotected sex. I did not have my period this month. My first thought was, I was pregnant. I did a pregnancy test after 5 days of my overdue period, and it was negative. Just went for a wee, and it was just clear liquid, didn't smell or look like wee. I'm really scared. Does this mean I'm pregnant? I haven't had any pregnancy symptoms and it's been 2 weeks since I had sex. Please help.