I have been having urinary incontinance and at the same time retention. i have also been experiencing pain lower abdominal and vomiting.?

You need a urologist: A urologist can order necessary tests and prescribe medications for your complex symptoms. A lot can be responsible for voiding dysfunction like this. In simple terms, there could be a problem with storing your urine, or emptying your urine, or both. Physical exam, simple tests, urodynamics and cystoscopy can differentiate the causes and get you treated appropriately.

The urinary and GI: Symptoms may or may not be related. Visit a urogynecologist or gyn.