Welcome back, I've read some of your other posts and realise you are finding anxiety hard to come to terms with and, like me, a lot of the symptoms come out as physical effects. Seems almost unrelated but for me it isn't.
Not that long ago I was back in hospital with chest pains, but in the end after numerous tests including an iodine MRI I was found to have no physical cause.
There have been lots of other things, and in each case I have had them thoroughly examined to eliminate physical causes before putting it down to anxiety.
This is only sensible, after all there might be a genuine physical illness crop up too.
It can be hard to accept hte results, and the mind wonders if there might be some mix up or mistake, or false negative, however in time I go to accept the fact my body was reacting to my mind.
In your case it might have a physical cause. lifting weights all day may indeed leave you sore, so again I'd say get it checked out by your GP, however don't be surprised if in fact it is more anxiety.
I read you were stating wiht a therapist or psych. May I ask have you started yet and if so how did it go?