I know, back pain comes with pregnancy, but since I was around 20 weeks pregnant every time after I have sex I get a terrible pain in my lower back, always on my right side, that shoots down to my calf. It's not relieved by position and it has nothing to do with orgasms. It is just straight up painful. I am 29 weeks now. do other people have this? Is it a pregnancy symptom? will it go away after the baby is born? can i do anything to relieve the pain?