Thank you for this interesting question, and I am sorry to hear about your troubles of late. In order to provide an accurate diagnosis, a doctor
would need to review your entire medical history and perform a thorough physical exam. In addition, the doctor would need to review the full details of your prior lab testing. Only after collecting this information will it be possible to provide recommendations. In addition, you may require further testing. Therefore, I strongly encourage you to schedule an appointment with an endocrinologist
Hypertension in someone your age is atypical and should prompt a workup for secondary hypertension. This refers to hypertension triggered by another process, often an endocrine or renal disorder. Clinically, your weight gain, hypertension, and stretch marks are all concerning for Cushing's syndrome. This is characterized by abnormal levels of cortisol. You have had several tests examining this possibility, all of which were reportedly normal. However, I feel you should see an endocrinologist who can interpret the subtlety of these values more carefully. Other disorders, such as pheochromocytoma, primary kidney disease, and renovascular disease, can also cause hypertension. Various lab tests and imaging studies can help look for these. Overall, I strongly encourage you to see an endocrinologist.