3 years ago, the day my mother passed away, I stayed up all night for 3 nights. I have symptoms when I lie down, I feel lightheaded (like being dizzy) for about 1 week. I used a blood pressure monitor, the results were 160 - 170/90 - 95, I returned to Ho Chi Minh City (when I went to the hospital to check, the doctor put a holter on for 24 hours, but the results the doctor said was not very high. Since then, sometimes I often have chest tightness (feeling like being pinched), sometimes I get cold and sweat all over my shirt (cold and pale lips - I'm tired) because at that time. I'm at work so I can't measure my blood pressure. I sit for about 30 minutes - 60 minutes, then I feel hot again. So the doctor asked me if I sometimes feel chest tightness, if I'm tired, what's wrong with me? signs of high blood pressure or low blood pressure Thank you doctor.