Hello and thank you for using HCM.I carefully read your question and I understand your concern. I will try to explain you something and give you my opinion. We talk about hypertension if we have mean value that exceeds 140 / 90 mmHg.A person might have high value during emotional and physical strees so its mandatory to judge on mean values. Hypertension is divided into two groups. Essential hypertension, without any identifiable cause,usaly in older age and secondary hypertension, meaning that it s a secondary couse of it.This is found in younger ages and the cause might be renal, endocrine or any cardiovascular anomaly. So,in your case we have to evaluate if we do realy have hypertension and than find its cause,becouse you are very young. According to your other symptoms like weight gain,feeling tired they might related to thyroid gland problems. So, if I was your treating doctor I will recommend some examination like an electrocardiogram, a cardiac echo to evaluate heart function and walls. A pressure holter monitoring to check your mean values.A full blood analyze, your urinary catecholamines, your thyroid hormones and an abdominal echo to check renal situation. After all this maybe we can find the cause and judge how to treat it. Hole I was helpful.Wish you good health. Best regards.