Do you take the Amitriptyline in the morning or at night ? Because it can be so sedating, may find it helpful to take it at night....then it has the added benfit of helping you sleep better while not intefering as much with daytime fatigue.
Keep a close eye on the other "potential" areas. RSD can spread.
While I was a little older than you when my RSD started, I can identify with the frustration of feeling "stuck" and being dependent on others. I was used to having more than enough to support myself long before I got married. Now that I am disabled (and on SSDI, I don't know if there is an equivalent in your country) and in desperate need of a divorce, I feel trapped by my financially dismal future. My SSDI income might be enough to afford a modest future if it weren't for the $500 a month I'm paying for uncovered medical.....and that's with my husband's very good health insurance. I'll be out even more when I lose his insurance with a divorce and have to pay for Medicare plus a supplement. My parents had planned on being able to help me, as PATHETIC as that feels, at least it WAS an option. Now my mother's health has deteriorated and they will be looking at nursing home placement for her, which costs about $100,000 a year here. The frustration of being "trapped" here is even worse because I would like to live nearer to my parent's, who live an hour away, so that I could do something to try to help them. The family joke was always that they didn't need long term care insurace because they paid it by sending their daughter to nursing school. This isn't working out for any of us
I LOVE your attitude and hope that you will be able to get the pain issues fully under control so that you can get back to work and out on your own again soon. Hitting the "big" 3-0 doesn't help the feeling that you want to move on NOW. Give it some time.....and keep doing the positive things that you are doing for your health !
Regarding the running, I would start out with walking and see how it goes. With extra meds, I am now able to walk up to 4 or 5 miles a day, although I usually keep it to 2 miles to limit the pain/use of meds. My RSD is from TOS which is near my neck with heaviness and numbness sometimes going down my arm, but all the pain is near my neck, not down my arm. After 1/2 mile, I can REALLY feel more heaviness,numbness down my arm (which at rest I don't feel at all). Much of the time, I can feel a "click" as my arm swings forward and back and at about 30 degrees rotation in the pendulum swing I go from feeling my arm to losing feeling. It has occured to me that might not feel as bad if I wore a sling. I've ruled that out because a traditional sling would rub the bad area on my neck. I don't know if you could tolerate wearing one if you have a lot of allodynia on your arm between the burns and RSD.....just something to think about.