hi there, your symptoms are more suggestive of menopausal condition rather than pregnancy
,but still to confirm it you can get your hormone assay for LH,FSH,estrogen and progesterone
done. Along with it also get a urine exam done to rule out infection as you are complaining of frequent urination
,. Visit your gynecologist and get the various options available for handling the same and take an informed decision about hormone replacement therapy
, Take care.