My mom is 71, she s been an alcoholic, is on medication for high blood pressure and has had three TIA s over the last two years. She s just been diagnosed with Chronic heart failure and her GFR has dropped from 56 to 35 in two weeks. She s weak, almost lethargic, (was walking a week ago but not now), much pain in middle of her back and some swollen legs. What s going on? Had her in ER today with don t know what s wrong .