In the mean time, go see your own regular family doctor and have him take a look at you and get referrals from him, yes workman's comp will want you to see their doctors but that doesn't mean you can't see your own doctor, and I would definitely get a workman's comp attorney, they have the experience to guide you through the system. Also until then go and get your self some arm/wrist braces (and keep your receipts) and wear those, even to bed. it will help some. I had a repetitive injury a long time ago.It did go away though when I left that job. You may also want to ask for steroid injections in your wrist or the most painful area's, but ask your regular doctor to do this or have him give you a referral to someone who does them, they will help some also. It won't take all the pain away but it might take the edge off long enough until you get things sorted out. Good luck to you.
I feel for you. I know what you are going through. Companies today treat their workers like crap, they know they can always replace. Repetitive is the worst kind of work I know. The only ones who don't are the ones who have never done it. I lost my job that way. I go in for rotator cuff surgeory and should be off work 10 to 12 weeks, instead I do the boss afavor and come back a little early because he needs me. Never finished my theopry, after a week, I tore my cuff again and now I can't lift anything, I get fired because I can't do the work. After 35 years, I can't do the work. Take my advice and keep looking for other employment, sweat shops are no good.
If you are in the USA, they must release your records. It is the law. As for a release of records form and fill it out while you are there so they can make sure it's correct. They might charge you for the records if they think there is a lawyer involved, so don't threaten until you have tried to get a copy on your own. If they don't, I'd contact an attorney without telling them and have the attorney get your records. You could have a workman's comp case or a disability case or both.