Hello and welcome to HCM,
You have mentioned that you have suffered from urinary retention
The cause of urine retention has to be found out.
Urine retention can occur due to many causes like:
1. Uretheral obstruction due to external, or internal mass.
2. Urinary bladder
causes - neurogenis, or muscular
A complete examination of rinary tract and / or bladder urine outflow studies need to be done.
Dark colored urine occurs in many conditions like blood in urine, enzyme deficiency (alkaptunuria, phenylketonuria
Regarding your second problem, of belching
, I would like to add that derranged renal functions is associated with recurrent and intractable hiccups.
Are you sure that you are having recurrent belching and not hiccups?
If you are having recurrent belching, it may be due ti indeigestion and / or gastritis
You need to consult your doctor for clinical examination, relevant investigations to know the cause of urinary obstruction and recurrent belching.
Thanks and take care
Dr Shailja P Wahal