Hello! Welcome on HCM! I carefully passed through your medical history and would explain that the heartburn seems to be related to a gastroesophageal reflux (possible hiatal hernia, esophagitis or gastritis). I recommend consulting with a gastroenterologist and performing a fibrogastroscopy. Regarding the frequent urination during the night, I don t thing that it is connected to the heartburn. It may be related to an urinary tract infection or any other disorders of the urinary tract. Do you drink water during the night? Are you a male or a woman? What is your age? Are you taking any medications (diuretics, etc.)? There are other different causes of frequent urination during the night (prostate hypertrophy, uterine prolapse, urinary incontinence, metabolic disorders, etc.). I recommend discussing with your GP on this situation and performing some lab tests (complete blood count, fasting glucose, liver and renal function tests, blood electrolytes, urine analysis, etc.). Hope you will find this answer helpful! Kind regards! Dr. Iliri