Hello and thank you for your question. I’d be happy to assist you.Myself Doctor Anil- a board certified medical consultant with more than 30 years of experience in medical field.It's my pleasure.
Well as you describe,you should check your thyroid panel to rule out thyroid dysfunction which is main contributing factor in unexplained weight gain even doing exercises after menopause.
Even take dietary modifications along with your exercise regimen.
The menopause is associated with a decrease in the resting metabolic rate that reduces the utilisation of calories and hence increases body weight.
There are clinical studies which had shown no weight gain with HRT.
For further details-
If your weight gets persistent increase over the time then see an Endocrinologist for further evaluation and management.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.Waiting for your response.It’s my pleasure to continue this conversation until you satisfy.