Welcome to the RSD family!
I started with it in my right leg and foot also, seems like there is a bunch of us with it in the lower right side. Sorry to hear you have it at soooo young.
I have a tens unit and never used it, cause they never showed me how. I tried it on my leg, and it drove me through the roof! It was enough so that I just threw in a drawer and never looked at it again.
It is nice to see all the new members, and all with the can do attitudes!
CYA soon!