Rear ended, any useful advice?

[WeAreOnTheRoadToNowhere]

2 days ago my car was hit at speed by a large, removals truck when I was turning right
I was spun round, luckily I wasn't hit again by anything coming the opposite way
I walked out of the car with help. Badly bruised legs and I now have pain around my middle where I hit the steering wheel. The paramedic checked me over and then gave me the choice if I went to ED or not saying he didn't think it was necessary
I didn't go. I'm now worried about the pain and spending too much time concerned that I may have internal damage.
I'd be grateful for any advice, practical or other
The other driver admitted responsibility
I'm sure it's just bruising but I hurt when I move, twist or go from sitting to standing. Moving in bed is painful
I've been given a hire car. One thing concerns me. I'd have the same car again but my drivers seat fully reclined on impact. This left me with no support. Luckily I went into a spin so I guess shook sideways but I'm sure it shouldn't have done that
Do I need to do anything or just wait for the insurance company to sort?

What a horrible thing to have had happen to you, I hope you are recovering from the shock.

Do you have anything on record from the paramedic? Insurance company may want it. I'd also go to GP too so there is a record there, particularly if you have any sign of whiplash or serious injury.

I'm NOT medical qualified, but I wouldn't have thought you would have internal bleeding, as it would have been evident before now. I'd imagine you are "just" thoroughly bruised and have had your muscles pulled about painfully, but do get medical advice if still concerned. Bruising can be pretty horrible and painful while it is new, I once had 75% of my leg and my arm black and blue from an accident, I felt silly asking GP to check it but when she saw it she said she totally understood why I wanted it looking at.

i'm sorry I don't have anything to add to yoru thoughts about the seat.

In terms of the shock and your mental health - when thinking or talking about it, go from when you felt safe before it happened, through it and include when you next felt safe (I imagine when you were with the paramedic or back home). It helps your memories to not get stuck in the trauma of the moment. Stay physically warm (not too hot) and comfortable, stay hydrated, and staying lightly mobile would all be sensible. If you get the shakes, let them happen, it's your body's shock response working its way out of your system and is healthy.

If you can do so safely, might be a good idea to drive down that road again sooner rather than later, to get the first one out of the way.

Thanks both, good advice
I will have to go down the road, its a main route from where I live. I'll try it sooner rather than later
I'm not going to use the junction again though, there is a safer option. I knew it was a bad junction, fast road and no filter lane, I indicated really early so the truck behind me knew I was turning. He must not have been paying attention at all