Hello and thank you for asking on HCM!
treatment should be adjusted according to TSH level
It is not recommended to change the doses only by clinical symptoms.
Regarding to the swelling it should be described in more details, is it a swelling of the whole gland or is it a nodule?
For a more detailed Answer please attach the result of the thyroid hormones ( TSH, Ft4 and Ft3), the actual treatment and the ultrasound