Are you taking something for it? If not you should try to take some tylenol anytime you have a fever like that its a concern pregnant or not
If your fever doesn't go away within 24-36 hours you should see your doctor.
http://www.baby center.com/404_can-running-a-fever-while-im-pregnant-harm-my-baby_1246886.bc
http://www.**********.com/404_can-running-a-fever-while-im-pregnant-harm-my-baby_1246886.bc