I'm not sure I understand your question. When did you have this surgery? Since your thyroid has been removed, you will need to be on replacement thyroid hormones. I'm assuming your doctor has given you a prescription for some thyroid hormone replacement - what medication did s/he prescribe and what dosage?
How are you feeling? Please let us know of any symptoms you have or what information you might need.
I'm sure you're tired, both from the surgery and from lack of thyroid hormones. It will take a while for the replacement hormones to start working - usually between 4-6 weeks before they reach their full potential but you should start feeling some benefit sooner than that.
Is that the only symptom you have?
It sounds like you must have pretty miserable with nodules and a goiter that large.
Do you have any questions you'd like answered regarding your replacement medication, symptoms or anything?
I just wanted to say that I agree with Barb135, if the pathology report says the nodule was encapsulated that is usually a sign that it hasn't spread anywhere else in the body and you are most likely now thyroid cancer free.
Since the pathology report says it was cancer, your doctors may still want to do some tests just to verify it hasn't spread. I believe this is probably the normal treatment, even when they are absolutely sure it hasn't spread. I had three small nodules (about 1 cm each) that were cancerous but also encapsulated, and my endocrinologist has been monitoring my thyroglobulin levels and has done ultrasounds on my neck to make sure nothing weird is going on there. (Normally with three cancerous nodules he would do radioactive iodine treatment, but since there was no evidence of spread we decided just to monitor). Nothing on my pathology suggests that the cancer spread outside the thyroid, but they still monitor me to make sure all is ok.
Good luck and I hope you feel better soon!