5 days ago, I started having a sinus headache, which lasted for 2 days, then on the 3rd day, I woke up congested and with a dry cough. The next day, my throats started hurting and today my ears and teeth ache. Any mucus that s actually come out is clear and I my temp is only 99*. Am I safe to assume that it s just a cold or is it time to go to the doctor?