Hi, welcome to our site. I am Dr Saumya Mittal, MD. Read your query. That is a very significant question and i appreciate your problem. I will try my best to answer your query I am assuming from the query that you have had no other medical issues like diabetes and thyroid disorders, and since you have mentioned, do not have any symptoms like fever. I would think that maybe the medicines you are taking are causing the problems. Since you have not mentioned the name of the medicines, i cannot be sure. Many bp medicines cause slowing of the heart, called beta blockers. In some circumstances the low heart rate becomes too low and therefore causes symptoms like vertigo, nausea, and cold sweats. Others like diuretics may loose you fluids and electrolytes including sodium resulting in the symptoms. I would therefore suggest that you have your blood pressure and heart rate checked again. A check of KFT would be a good option too. The stopping of the estrogen may cause some late symptoms too, and therefore I would suggest you meet your gynecologist again to start it in a small dose and discontinue it more slowly I hope this helps you. Inform the reports mentioned above/if any other so I can be of help further. I have given you the answer to the maximum considering the information provided. The results of the tests could further enhance my answer to you. Please do understand that some details could be extracted from a detailed history and examination. Please feel free to ask another query. I would be glad to help you. Looking forward to your return query with the details asked so that I can help you further. (If the answer has helped you, please indicate this) Best of luck.