Hi, I recently had wisdom tooth surgery and I was prescribed a penicillin-based antibiotic called IC amoxicillin and a narcotic painkiller I had only taken once post-surgery on the same day. I have never taken any kind of prescription drugs like these before, but I haven t taken any more of the narcotic since the day of the surgery. This is also coupled with the fact that I ve never been on any kind of antibiotics or antiviral medication until now. Recently I have been having pains in my upper abdomen/lower chest region in the center. Is this a side effect of the antibiotic, or soft food diet I ve been on since the surgery? My appetite has decreased ever since and I m not extremely worried. If anything, I m just a bit curious. I am diagnosed with GERD, but this isn t the same pain I get from reflux. If any more information is needed, please let me know, thank you for your time!