Hi Kate83,
I did suffer with bad reflux and hb and found Renny tablets to be ok. For something completely outside the square though, I began seeing an accupuncturist/chinese herbalist several weeks ago (not for hb, but for gestational diabetes) and was given an "interesting" mix of chinese herbs to take 3-4 times daily. It's totally done the trick for the reflux/hb ... haven't suffered with it at all since taking the concoction. Tastes like crap, unfortunately, but you only take a small amount and wash it down with water.
Anyway, an alternative suggestion if the usual pharmacy stuff isn't working.
Good luck with everything, hope you feel better soon.
Andie