I AM 43 YEARS OLD, AND HAVE MENAPAUSE. FOR ABOUT

I AM 43 YEARS OLD, AND HAVE MENAPAUSE. FOR ABOUT 2-3 WEEKS NOW, I'VE BEEN EXPERIENCING TENDER, AND HEAVY, BREASTS, AND AS OF THE LAST WEEK, I'M FEELING NAUSEATED. WHAT IS WRONG WITH ME. AS I SAID BEFORE, I HAVE MENOPAUSE, SO I CAN'T BE PREGNANT, BUT I TOOK A HOME PREGNANCY TEST, JUST TO CHECK, AND IT WAS NEGATIVE.