Hello and thank you for using HCM.
I carefully read your question and i understand your concern.
High blood pressure might be the cause of your symptoms.
Sometimes a lot of people does not feel anything even having high blood pressure.
But sometimes, excessive blood pressure in a hypertensive crise can be manifested with
headaches,
blurred vision, nausea or vomiting, increasing confusion or lightheaded, chest pains ect.
So, first of all i will recommend you to measure your blood pressure.If you have elevated values, meaning mean values above 140/80 mmHg than you have to treat it.
If I was your treating doctor i will recommend a full check up with
blood test analyze, a electrocardioram, echo-cardiography and a pressure holter monitoring. Only after this we can be able to judge to start a medication or not.
If we don't find
hypertension we can than look for other causes of your symptoms like cervical problems or neurological.
Hope I was helpful. Wish you good health.
Best regards.