Flu-like symptoms at 7 weeks

I worked 8 hours today and right before leaving I started feeling extremely sick. I've had some pretty bad nausea and body aches but today was way worse. I instantly felt exhausted, my whole body was aching including my legs when I walked, and my head started to hurt. I came straight home and took one Tylenol and laid down. I now still have all of these symptoms plus nausea and slight cramping. I feel miserable. Anyone else like this? Is this normal for first trimester?