I was in the same situation in January. Had a nice big goitre that affected my breathing and swallowing. I am not diagnosed as Hypo because my my bloods returns TSH as "normal" while T4 consistently below range and a LOT of hypo symptoms. No swelling of ankles and legs...
What I can say is that initially after surgery I did feel better. Not sure if it was psychological because something was being done to improve my condition.
But since you are diagnosed with thyroid disease you will most probably already be on some meds. It is a good idea to post your blood results with references as well as your dosage you currently taking. There are plenty of people on this site that will give you valuable feedback.
Are you taking Levothyroxine? Do you have recent thyroid results and ranges?
Hemilobectomy relieved the compression of my trachea so breathing and swallowing were much easier after the surgery but as I had half a thyroid gland remaining Hashi symptoms didn't improve at all.
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