Hello everyone. Has anyone experienced lower back pain in the 34-35th…

Hello everyone. Has anyone experienced lower back pain in the 34-35th week of pregnancy? I woke up this morning with my lower back hurting. I tried lying in different positions, sitting, but nothing helped. It stopped after about 10-15 minutes. And now it's hurting again and for about 10 minutes ?. What can I do to stop the pain and what could be causing it?