she can take tylenol for the fever and body aches...it wont harm the fetus..
Welcome to the forum!
Well, acetaminophen is known to be safe in pregnancy. Warm saline gargling, warm lemonade, ginger tea etc can be tried to soothe the throat.
However since your wife is unwell and had a negative pregnancy test, it is unlikely that she is pregnant. It is normal for periods to delay by a week or so once in a while and it could also be due to the fact that she is unwell. She can repeat the test at a lab or at a doctor’s and if it is still negative she can take complete treatment from her PCP.
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!