I know others have asked about lower back pain...but this is just on one side and it goes into my upper butt too. It feels deep, anyone have any idea as to what's causing this? I did get it today at the end of the work day, and I sit in a chair for 8 hours...
Re: one sided back/butt pain
Here ya go: https://www.whattoexpect.com/pregnancy/sciatica/