post hemithyroidectomy recovery

I had a hemi-thyroidectomy to remove a thy3 u4 nodule. I am still awaiting results. It has been just over 2 weeks now since the op and my voice (although works  well) tires really easily after around 45 mins of conversation and my throat then feels really sore...which is a problem because I deliver talking therapy as a profession full time!....anyone else able to say how many weeks their voice returned to normal functioning .....??