Hello, according to your description, this situation is generally common in lumbar muscle strain and lumbar disc herniation. I caught a cold because of fatigue. Some kind of relationship. It is recommended to rest more at ordinary times, keep warm and avoid catching a cold. Warm salt water or magnesium sulfate warm water can be used for frequent hot compress. For about 20 minutes each time, drugs for promoting blood circulation, removing blood stasis, reducing swelling and relieving pain are applied externally. You'd better go to the hospital for a check-up if you have time.