I don't think it's dangerous. I got sick with the flu 3 times during my first pregnancy and had a fever every time. That was during the first trimester. Just try to put a cool cloth on your forehead or neck and dress lightly so you don't overheat. If the fever is persistent or gets too high, you can take Tylenol
U mite need to call your doctor or go to the hospital so it won't be anything serious just to be on the safe side.