Hi, Have gone through your complaints. The back pain is most probably from muscle strain due to non-ergonomic position. The knot sized swelling is mostly a hair follicular infection. The pain from muscular strain can be dealt with by applying hot water packs in the affected area. You should also take complete bedrest for a period of day keep all activities to bare minimum. Once the pain decreases it should help to do back-muscle strengthening exercises. This should prevent further episodes. The best person to see for the pain now would be a physical therapist instead of chiropractitioner. In all probability it will be covered by your insurance. You can also take over-the-counter medications too provided there are no contraindications.