I thought I'd share a few websites that I found helpful on this subject for any other ladies out there who might be experiencing this as well.
The first Posterior Pelvic Pain is a great page that explains what is causing the pain and also helpful info on the best ways to move. If you've ever experienced this you'll know what I mean.
The second This Spine of Mine Also has some helpful information.
My midwife suggested I get a pelvic support band and so, I'm planning on buying one of these soon: A Sacroiliac Belt I haven't decided yet if this is the one I'll purchase, but it will be something similar.
Lastly, I thought I'd also share the two biggest tips I've found most helpful when dealing with this.
1. Always sleep with something between your knees. I found just doing this one thing to greatly improve the pain I experience during the day.
2. If possible try to avoid sitting on the hard floor. Also for me, certain tasks such as hand washing the floor or cleaning out the van, (activities that require a lot of crawling/bending up and down really aggravate the joint pain quite a bit.