Can I take a low dose Ambien (zolpidem) with and OTC sleep aid...Two Ambien (zolpidem) (or the stronger dose) leaves me groggy in the am...One I only sleep 4-5 hours?

MAYBE? Perhaps but maybe just ask for a different sleep aid that is longer acting like Restoril (temazepam) for instance. Explain to your physician.
See below. Your doc can help adjust the timing of your medication and/or select a different medication - there are many choices out there. Behavioral methods are among the best options for the long-term.