Just be patient and wait until you can take a test or go to the doctor. Some women are so desperate to get pregnant that they wind up tricking themselves into thinking they have symptoms. Don't forget it is also the holidays and typically a stressful time for some people, which could also account for some of the symptoms you are experience.
Typically one does not have symptoms until 6 days after conception at the earliest, since that is when implantation would occur. It is quite possible that you could have had implantation, with the blastocyst (what the fertilized egg is now called) starting to make connections with the uterus, creating the placenta, and triggering hormonal/chemical changes within the body.
Fortunately you will only have to wait about another week to find out. Do a home test or schedule an appointment with your physician. Good luck!