Lower back pain relief is something that chiropractic care is noted for. The fact is, this is usually a nerve transmission problem. Lower back pain is usually caused by a chronic or traumatic injury that is not so apparent, but should not be dismissed out of hand.
Chiropractic care helps with back pain by disrupting the pain impulse without the use of drugs. Alternative agents such as analgesic creams, nutritional and herbal supports, AND drugs all do this to a greater or lesser degree. In addition to adjusting, I use ice, rest, massage, rehabilitation exercises and nutritional supports to help reduce pain and swelling, and encourage healing of your injured back.
When in bed, you can place a pillow under your knees (best with hips and knees at 90 degree angles) for laying on your back, or between your knees (the knees must be parallel to the hips) to decrease the stress on your back when lying on your side. Or you can can use a couch or chair with your back on the floor and your hips against the couch, with your knees bent 90 degrees on the cushions (I have found this a useful position for myself).
Reclining chairs are not the best for posture support, but for some patients this is good for relieving back pain. I am primarily concerned with working together with you to get you out of pain, and in this regard, any option is fair game. If you need a pain reliever from your medical doctor, that's ok for the short term, but in the long term natural healing will usually serve you best.