Can getting a spinal block cause long term lower back pain?i received one for a c-section and was stuck multiple times.

Generally no: Epidural a have been known to cause short term back pain, especially since you we're poked a few times. Chronic pain is usually from other issues.

Very unlikely: Most epidural injections have no issues long term. Sometimes, a spinal injection can lead to a condition called arachnoiditis if given that route rather than epidural but extremely rare. Most times, if pain in back, it is short term.

Prob Not for Long: This condition is very rare but seems to occur more often with c-sections. It's possibly related to some of the skeletal changes that happen with pregnancy combined with the spinal injection. This condition almost always resolves with time. Some pt treatments may go a long way to help resolve your situation.