Is it usual to feel better, then start having pain again on right side two weeks after lap appendectomy? feel nautious, distended stomach still.

See your doc: You may be forming an abscess which would need to be drained. You should see your surgeon and alert them of your symptoms.

Appendix : I would speak to your surgeon about this and get yourself check out to rule out post op complication or alternative diagnosis.

Go back to surgeon: There may be post operative adhesions forming, which could produce these symptoms. Go back to the surgeon for re-evaluation.

Yes, possible: You could have scar tissue internally creating a stricture and blocking the bowel from normal function. It is very important to seek immediate medical attention.