dear ma'm, thanks for putting up a query to HCM. though the status by your history is not very clear and you are very right you need to be seen by a doctor. pls confirm your thyroid function status in the first place, secondly pls get a USG neck done to find out about the lump. what it is? is it a lymph
node, a thyroid nodule
, or anything else. then see your doctor with the reports. your shoulder pain
can as well be explained by the thyroid function status and the nodule.