Since this whole thing started I've been getting an occasional slight pain behind my breastbone, right at the bottom tip where the ribcage joins. I've had ECHO's done and my heart is OK, I don't think it's a stomach issue as I have no reflux or any other signs of stomach problems. So I'm wondering if it's a liver pain? At the start I was pretty sure that CoQ10 was causing or exacerbating it but I haven't had now for about 18 months. Did flush number 3 last night and have had a but of the breastbone pain again today.