Pelvic pressure 22 weeks

Cathy
Hey ladies! Ok so this is my 4th pregnancy and I'm chalking it up to my body is not a spring chicken like it was 12 years ago with my first...but for the past week or so I have had the worst pelvic pain/pressure that barely lets up. It feels like I've been carrying a ball between my knees and my muscles in my pelvic area are getting a nice workout. I dont see my Dr till next month. My little man is very active so Im not worried too much...but I just cant seem to get this pain/pressure to let up. Has/does anyone else know/experience this pain?