3 years ago i broke my tailbone, i was able to pick it up and move it around without pain, now since about a week ago i havent been able to sit or do anything but lay on my back w/o having pain. the bone is about 2 inches wide with a bubble of fluid?

It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. It would be prudent to see a doctor, start with a primary care provider to ascertain if you need referral to a specialist. Wish you good health!

Manipulating a broken bone without training is never a good option. Please see your GP or an Orthopedic Surgeon for examination, imaging, and appropriate treatment.