I feel your pain.
Hard-headed can not even begin to describe my DH.
He fell from a ladder while installing surround sound in our den with 16ft ceilings, hurting his shoulder in the process.
He refused to go to the ER or the doctor the next day.
Almost 2 weeks later, when he had to literally use his other hand to LIFT his injured arm, did he decide to go to the doctor.
He had broken his arm/shoulder in 6 places.
One good thing did come out of this.
If he EVER refuses to go to the doctor... I have a great example to draw from if needed. ;)