Has anyone expirenced tightness in their lower back while having Braxton hicks contractions? I'm 25 weeks and I'm not sure how often you're supposed to et them, but I have quite a few every day. Last night I was having them while in the shower and my lower back got really tight. It lasted a few minutes and the BHC lasted the whole time as well. I'm going to call my dr today but was wondering if anyone else had expierenced this?