Fever during 10 +5 wks what to do

Catherine
I have been feeling like crap today, possible flu or cold. 
I have been sleeping most of the night and I just woke up from a night sweat took my temp and it was 100.9. I am worried that my fever spiked while asleep and then broke. What kind of birth defects or likelihood of miscarrying if I did have a spike for several hours.  I'm taking a Tylenol to try and reduce my fever a little more.