Sudden rise in blood pressure. Help us.

My mother is a 60+ working women. She is animatic, and having high thyroid and also taking iron supplement and thyroid medication daily, now her hemoglobin is 9.6. and she is also suffering from Asthma and also taking inhaler daily. For some 2 months she is experiencing sudden rise in her blood pressure. First day suddenly she felt uneasy and after that checked her blood pressure through electronic bp checker. It was near about 185/120. She taked amlodac 5 without doctor's consultation. After that in the next morning she went to doctor for checkup but at that time her bp was 120/67, doctor suggest her to measure bp regularly but he didn't prescribed any medicine. After that near about every 3-4 days interval she is experiencing sudden rise of blood pressure then now she is taking amlodac 2.5 regularly but after that also she is experiencing sudden rise in blood pressure and acid reflux and gastric problems and also sometimes associated with shortness of breathing. Please help us.