I would say my left side is worse, too. I tend to do what I call "throw my hip out" on my left side, more often than my right. Sciatic nerve pain favors the left. My jaw is bothering me on the left, too, and my rib cage is bothering me on the left (doc says it's inflamed cartilage), so I would say it's definitely possible. I have major problems in both sides of my mouth, but if you asked me which tooth I thought was causing me the most grief right this minute (or leaking), I would say it's my lower molar on the left. Oh yea, and I have lymph pain above the breast on the left side.