Pulled muscle in my back what can I do to stop it going into spasms now.

[IthasYes]

Lower down I've pulled a muscle and I'm concerned it will develop into a spasms where I can't move. It kept me awake last night trying to turn over etc.
Is there anything I can do preventative?

When I breathe out I can feel it as well

I find it best to keep moving, take paracetamol for pain/inflammation and have some sessions on the Shakti mat. However, I also do Pilates and lift weights so I have a strong core supporting my back.

Not knowing your history, I would suggest a visit to a physio who specialises in backs.