Posterior Pelvic Pain (Sacroiliac Joint Pain)

Very recently I have been experiencing a very sharp pain in the very lower left side of my back (dare I say left buttock). This intense pain can be triggered by just about anything, from lifting something off the ground to simple things like going from a sitting to standing position. The intense pain comes and goes as I move, but the dull lingering pain seems to be here to stay.

Note: I know what an achy lower back feels like...this is not a muscle pain, or simply back pain. This is intense.

I had pain like this while pregnant with Logan and I think I mistook it for Sciatica, however upon further research it seems like I'm experiencing Posterior Pelvic Pain (Sacroiliac Joint Pain) which can begin later in pregnancy.

I don't like being pregnant, and yet Bryan and I want more kids so here I am. I don't want to complain, I know what I signed up for, but unfortunately this is more painful than I remembered. I'm walking like a cripple, and I'm already nervous about the next time I work at Logan's school. Standing up, sitting down, it's all I can do not to scream out each time the pain strikes.

I'm 25 weeks along. +/- 15 weeks may seem like an eternity if this pain continues, but hopefully (like most pregnancy and labor pain) will be a distant memory when I hold our newest addition in my arms.