Hello Dr. On Tuesday, I started getting a toothache and at night started getting headaches as well as tough time breathing and had some uncontrollable body shakes from being cold and then I would get break out in a cold sweat. I went in yesterday to the dentist for a root canal and he prescribed me clindamycin. My question is is there another alternative to substitute this medicine? should I go to the hospital? I need advice, cause the ER visit will cost a pretty penny.