I guess the best thing you can do if you cant take pills is stretching your back muscles. I have major back pain that comes and goes from an old basketball injury and I find that stretching helps. Alternate with a heating pad and ice while stretching while watching TV or something. It might not be the same day but within a few days it might help. Most likely it's going to hurt but trust me...it is going to help you. Also, you should stretch your back when it is feeling fine. When my back is at its worst I can barely move without bracing myself with my arms and throw in some sciatic pain and it's not fun at all. Everyday stretching is the key and also some light exercises to strengthen your back and ab area which will lighten the load on your irritated muscles or spine.
Thankfully I can play hoops and be relatively pain free these days but playing around my kids is the tough one as far as my back goes. It's pretty strange I suppose. Good luck and I hope you feel better soon!