Hi, I have gone through your question and understand your concerns. Thyroid supplementation has to be started in second trimester of pregnancy if TSH levels are more than 3.5, so your doctor was right in starting the drug.
However, sometimes the dose needs to be adjusted according to the symptoms of the patient. Overdose of
thyronorm leads to
increased heart rate, palpitations, anxiety, feeling excessive heat, sweating and difficulty in sleeping.The symptoms in your wife are most probably due to
drug overdose. However, such symptoms are also common in
heart disease.
I would suggest you to repeat her TSH and free T4 values, and get the thyronorm dose adjusted accordingly.
If TSH values are normal, then do
consult a cardiologist for getting her properly examined, investigated and treated accordingly.
Hope you found the answer helpful.
Wishing you good health.
Regards,
Dr Deepti verma