Hello,
A particular point pain, if at the centre of the spine could be disc, if it along either side of the spine, could be facet(side joint) of the spine.
It is hard to diagnose apart from a consultation. This could be online.
Next Steps
Till you have a consultation do not do the aggrevating activity.
Constant sitting could bring about stiffness of the spine, so take breaks every 40 minutes or so.
Health Tips
Would be happy to help if you need an online consult.