thank you for sharing your complain, dear friend if there is pus formation it may cause swelling to gum area,cheek and associated around area and occasionally throat. toothpain can be also associated with headache. but in your case it doesn t seem so. because you said you don t have tooth pain or infection. it may be due another cause at this time. if you feel pain or sensitiveness in your teeth plz consult your dentist. otherwise you can take simple pain killer like paracetamol.it will cover your headache and throat pain temporarily. hope this answer will be helpful to you. for more queries plz don t hassitate to ask. get well soon dear friend