Thank you both very much! I did jump in a bath and relaxed for a little then took a long nap. It seemed to work..
Take a cool shower. Also sip iced water or suck on iceblocks. If you still feel bad after the shower and a rest, then go to your doctor for a checkup. It is always better to be safe at this stage of the pregnancy.
If you are running a fever you should go to ER.