What Causes Frequent Urination And Absent Periods?

DIAGNOSED WITH PCOS, BEEN MARRIED FOR 6 YEARS AND SINCE DAY 1 BEEN TRYING TO CONCEIVE. RECENTLY FELT AS IF I HAD GALLONS ON URINE IN MY BLADDER BUT COULD NEVER RELEASE "GALLONS." NO SYMPTOMS OF PREGNANCY OTHER THAN FREQUENT URINATION DURING NIGHT. HUSBAND HAS LOW SPERM COUNT. EXTREMELY PAINFUL CRAMPS AT TIMES, AND NO PERIOD SINCE FEB. WHAT IS THE ISSUE IM GOING THRU????