Expound symptoms and conditions

I've been taking Aciphex for a couple of years now. It has taken care of my heartburn very well. However, for some time now I've experienced difficulty breathing when I lie down along with a cold tingling sensation in my feet that at times is almost unbearable. My Doctor can't tell me why. A friend mentioned that she has just received a prescription for aciphex and read that these are some of the soide effects. Can anyone expound on this?