thanks for your query.
A slipped disc
is not a contra indication for a normal vaginal delivery
, unless it is severe enough to compress some crucial nerves.
Also, the location of the slipped disc is vital.
Of course, you can take pain killers within limits if the pain is unbearable
For the exact prescription, as well as the severity of your slipped disc, you need the guidance of an expert neurologist
Also, inform your obstetrician about the same, and have plans made for your labour accordingly.