Any help out there for one that suffers from overflow incontinence?

Many options. Intermittent self cath is the most common treatment. If there is an obstruction from prolapse or a prior surgery it can often be corrected. Interstim (sacral neuromodulation) can be effective in many cases. Depending on the cause, there may be other treatments available. See a physician familiar with overflow incontinence and its evaluation and treatment.
Yes. Start with review of med list. Check for fallen bladder and obstruction. If none can consider interstim or biofeedback.