Third Trimester Infirmity

As per usual, I hesitate to complain, here or elsewhere. Typically when I'm ill or feeling grumpy, I keep my complaints to myself and to those closest to me. But I have a threshold where, when reached, I feel like I need to vent. The logical part of me hates this side of myself. Complaining really doesn't get me anywhere, and I know it. I absolutely know that I am luckier than many, that there are a lot of people who have it far worse off than I do, and that I should count my blessings. And I do. I am immensely grateful for everything that I do have. I am immensely grateful that things aren't worse than they are. That said, I literally can barely move at the moment. Every time I shift my weight, or try to get up or sit down, or god forbid, try to walk, I feel like someone is twisting a knife into my SI joint. I have a fairly high threshold for pain, but this pain actually catches my breath. The narcotic pain reliever that my doctor prescribed when I started experiencing these problems (and which, for the record, I only take when it gets this bad) isn't even touching the pain. The stretches that worked in my first and second trimesters do nothing because my belly is too large for me to do them properly. Heat and ice do nothing. The SI belt that I purchased, while I do think it helps to a degree, obviously doesn't help enough. I am, practically speaking, immobile. And what did I do to bring on this level of discomfort? I went to the mall. For about 2 hours. That, my friends, is all. A simple trip to the mall with Chris and Audia yesterday has rendered me entirely immobile for 24 hours now. 
You read in pregnancy "guide" books that the third trimester is the hardest, and while I agreed with that statement in my first pregnancy, this pregnancy makes the first seem like a cake walk. I by no means want Callen to be born before he is ready to be born. But I am beyond ready for him to be ready. I am so done with not being able to do the normal, day-to-day things that I want to be doing. And I am feeling so guilty that Audia is essentially as home-bound as I am these days. Not to mention that today is Chris' birthday and we can't go out to do anything to celebrate because I can barely walk.

One month left. One month left. One month left......