What SarahKelley is saying about a possible scaphoid fracture is absolutely right (well done Sarah!) The mechanism of injury you describe could cause such an injury and all the pain provoking movements you desribe fit the picture. Furthermore schaphoid fractures are common

It is folly to go on self diagnosing and considering going to an osteopath. Scaphoid fractures are difficult to diagnose and manage and mismanaged fractures can go on to sustained disability and pain so neglect can make matters worse not better. You should get it seen again by an orthopedic surgeon and ensure you have it really checked out and ruled out before carrying on. Fractures that are missed early on by imaging are often picked up later due to displacement of the bone fragments due to lack of immbilisation, or due to death of part of the bone

Have a read about scaphoid fractures:

http://emedicine.medscape.com/article/328658-overview