crushed thumb in car door and also rentched it as i went to walk away as did not realise what i had done it has been xrayed and no break but 5weeks on i cannot bend it from top joint into my palm without severe pain, when tried exercises, advised by A&E department,. cannot even hold light pen between thumb and for finger without severe stinging pain and swells up again as soon as start exercises,..do you think i might need to have surgery or will it heel over time thanks for any advise sue h