Your insurance is good for any work you have done from this point forward. It does not cover work that was performed prior to having the insurance.
yes
Yes, you can have dental work done while having a sore throat, but it is courteous to contact the office and explain the situation as you will expose the staff to your illness.
Not if the dental work is wisdom teeth removal. Sucking on a straw will cause the stitches to come out and the incisions to start bleeding again.
depends how bad your fever is