I had a biopsy done in march. this was for a nodule on my isthemus. it was not cancer. however i have been having pain when bending my neck down and lifting it up. in the area. ?

Scar tissue?: My guess is you mean the isthmus of the thyroid. Obviously it's been quite a while since the biopsy was done however scar tissue can occur which is tougher and less resilient than normal tissue. This can bind surrounding tissue like tight strings. Consider a follow-up evaluation with your surgeon to see if there's any exercises or local massage that might loosen things up.

Check w doctor : Any pain experienced from the biopsy of your thyroid gland should occur in the first 48 hours. If you are experiencing pain in that area, you should revisit the doc, presumably an endocrinologist or head and neck surgeon. Your pcp shpuld also know about this pain, because it may have nothing to doofus with your thyroid gland.

See your doctor: Even if small amount blood collects after fna shoud not take this much time , go for follow up visit to your doctor for examination , and assurance , most likely , will clear soon.