As Soon As I Lay Down In Bed Of An

As soon as I lay down in bed of an evening I begin to excessively belch. This can go on for 5hrs at a time thus stopping me sleeping. I sometime have diarrhea and bring acid up. I've tried to see if it's certain foods or heavy foods but just recently it's every night regardless of what I've eaten. When it's particularly bad and I've been belching till 5am, I've been so tired I've had to stay off work.