Hello and welcome to e health forum.
Your symptoms do appear to be due to hypertension or High blood pressure.
All levels above 120/80 mmHg raise your risk, and the risk grows as blood pressure numbers rise. High blood pressure (HBP) itself usually has no signs or symptoms. Rarely, headaches may occur. You can have HBP for years without knowing it. During this time, the condition can damage your heart, blood vessels, kidneys, and other parts of your body.
Most people with high blood pressure also have a element of stress and anxiety as the cause. Hence they present with chest discomfort, fatigue, difficulty breathing, aches and pains in the body. Obese individuals can also present with swelling of the legs due to dependent edema.
Trying to improve your physical fitness with weight loss, regular exercises and stress reduction, dietary reduction of salt, will be the initial steps to reduce your Blood pressure.
You may consult with your treating doctors for a examination and prescription of proper medications to control your symptoms.
Tests like Chest Xray, EKG, renal and liver functions also need to be done to rule out other potential causes.
I hope this helps.