Ah Sied, back pain can be brought on by a spasm of MS or just by making an odd movement.
A&E told me my back muscle was in spasm & had siezed. Only painkillers, physio with traction and hot/cold compresses did the trick but it took a few days. This was years before any MS symptoms.
It might be an idea to keep a record of when your pain starts, if it gets worse and when pain eases. Make a note of when you take painkillers & the type, plus how often you need to top up.
Regular Paracetamol every 4 hours is effective as long as you stick to every 4 hours for 2 or 3 days. Managing pain control helps. Don’t do too much when the pain eases.
If no different by Sunday/Monday and you’re still in severe pain, then an urgent GP appt. is needed. Take the notes you’ve made.
Note; An X-ray doesn’t show muscle or soft tissue damage. An MRI will show inflammation etc but needs to be requested by a Consultant.
Don’t accept any excuses or dismissal, it’s important you are relieved from pain and potential spinal injury or damage asap.