Good morning,
I have not ever had luck with physical therapy...

.
They seem to always go past the line my muscles will allow and tell me otherwise.
Maybe I didn't hit one that had FM true knowledge...though they said ("we will get you better, peel you like an onion and tune you up")......well this onion is the same as I have ever been. The place I am in life I got myself to.
I don't what to say....I use all my muscles during the day at work. I purposely think about muscle groups as I do things. I do not use repetative movement if I can help it. I never sit still too long as that tightens me too.
It just takes years to know you!.
The book I talk about " FM and Chronic Myofascial Pain, a survival manual by Dr Devin Starlanyl 19.99 on amazon, was priceless for me.
It give movement guidance, anatomy and physiology for you to understand the mess we are in.
I have Travelle and Simons too $$$ if interested. This is the BIBLE for medical professionals, your PT has it I am sure.
So, if they take it slow and spend more time on stretch then building muscle for you (you cannot train a muscle that has a trigger point in it) have him check you for trigger points.....
If you are positive, then he should know not to proceed.
You need masssage and working to break the trigger point.
My issue was the muscles were cold when they worked on me too, I need to warm them. The best PT spot is in the shower. I put handles in there for me to lean on to do what I need to do. I have changed so much in the house to be the best I can be.
Good luck. Maybe you will be lucky. Water execise is good too..as you are boyant and the water warm it all adds to good stuff for us. I just hurt when I got out and tried to walk to my towel....so I saw the shower was my best bet yet.
Keep us in the loop..........

. Nancy B