<s>[INST] Currently having lower backpain and it seems coordinated with my heartbeat . It throbs so painfully i could barely stand. don t know if this is related to a painkiller I took earlier coz I had a toothache . Didn t took a meal since Ive had the medicine coz I could barely eat because of my tooth. This has been the 2nd time. The first was almost 4 years ago while I was inside a mall. Thanks. [/INST] Hi, First, I would like to mention that the painkiller which you took for toothache ideally can not cause lower back pain. What I feel is that you may have pulled a muscle at the lower back, and you may also be feeling discomfort in lower rib cage area due to medicine on empty stomach. I would suggest you to locally apply an anti-inflammatory analgesic Chat Doctor.  If the pain persists then you must visit an orthopedic surgeon or your physicians for the same. Regards </s>