no they didnt give me any meds just said to keep with the paramol and paracetamol.
Fair enough. Please don't feel like you've wasted your time. A disc prolapse can lead to some serious problems with the nerves that travel down to your legs. With you having pins and needles, it suggested that the disc was compressing one of the nerves that exits your spinal cord in between each segment of your vertebrae. That needs a medical assessment, not just a few words of advice from a forum.
Hopefully your MRI will be pretty quick. As they haven't admitted you, then I expect the GP will recommend time off work, plus possibly prescribing you some painkillers that are a bit more effective than just paracetamol. Medium-term, rest and some physio are probably likely. You defo did the right thing getting in the loop tonight.