I have a bone spur in one of my sockets where a tooth was extracted 3+ weeks ago. it is causing me a lot of pain, is this normal to be in so much pain?

Bone spurs: Need to be evaluated by the dentist , yes it may cause a lot of pain specially when something touches it. The spur need to be removed

Exposed bone: It's normal to be in pain. You should see the surgeon at once to have the exposed bone treated. Feel better soon.

It is not normal: I would recommend visiting your oral surgeon for post-op evaluation and treatment if needed.

No: See your treating Dentist or Oral Surgeon. By this time you should be well along the road to recovery.