Hi Dr. Grief, I have severe heartburn right now and it has been here for the last 2 and half hours. I am not on any medication, but I just took 2 tynonel pills about 15 minutes ago. Since then, I have felt cold chills and a little bit of nausea, and my neck was tingling a little bit and felt cold. My arms mainly feel cold as well. My heartburn comes and goes, lasting about 10 seconds each, at intervals of about every 5 minutes or so. I would appreciate it if you could tell me if I am having reactions to the pills and what I could do right now to help my problems. Thank you.