Lumbar soreness and discomfort after sex may be caused by having sex for too long and not getting enough rest. There is also too frequent sex life, the other is the waist itself has some lesions, such as lumbar muscle strain, lumbar degenerative osteophytes or lumbar spondylolisthesis and so on. You can consider appropriate control of the number of sex life, 2-3 times a week is more appropriate. After sex to ensure enough time to rest, if still repeated back pain discomfort, it is best to go to the orthopedic department to find a doctor’s interview, the doctor combined with the preliminary analysis of the examination. You can routinely improve the lumbar spine X-ray, to understand whether there is obvious degeneration or lumbar spine slippage and so on, according to the examination of the situation and then do the corresponding treatment. Localized massage and hot compresses can be appropriate, and the use of ointment, such as flurbiprofen babu cream can help relieve.