I just noticed swelling at the very lower part of my back just above the center of the top of my butt cheeks. Sometimes I will have a sharp pain in that area when bending over or after getting up from sitting on a hard surface. I just had a baby 2 weeks ago and was in a car wreck 9 months ago. What could this be?
Dear-thanks for using our service. You might be suffering from sciatic neuralgia, secondary to herniated disc or spinal stenosis.  You have been pregnant recently and the weight on your back could aggravate your pain. Furthermore, you should have an MRI of lumbosacral to see what is the level of damage. Anti-inflammatories, analgesics and muscles relaxants can help your pain. If no improvement in 2 weeks then consider massage or physical therapy. If no improvement, then epidural block is the next step. I hope my advice has been helpful Chat Doctor.