FWIW, those of you waiting to see physios - I don't think they can do much anyway. My physio is very good, but basically advised me on how to stand/lift/move etc with least pain, keep knees together, avoid leaning and twisting, avoid assymetrical positions, avoid stairs when posible etc. Also strenghthening core muscles by doing Pelvic floor and inner ab muscle excersizes is supposed to help with general stability.
My physio issued me a 4 inch wide elastic belt to wear on my lower hips. I find this a bit of help with the hip pain, but quite uncomfortable in itself, so don't wear it unless I am out and on my feet all day. I also have a tubigrip (like a huge elastic bandage worn around my belly - from under boobs right down to hips). If you are really struggling but can't see a physio sooner, maybe consider trying to get something similar at boots? Or even a scarf/wrap tied around hips might help?
Re labour, my physio thinks delivering on all fours will be best for me. To labour in the lithotomy (stirrups, or on back with knees apart) position would be very painful and possibly cause pelvic damage, so I have said I will not concent to a forceps delivery but will choose a caesarean instead if an unassisted vaginal birth doesn't look like its going to happen.
Re position for stitches (likely for me, as I have needed them with CD1 and DC2), I have writen about my limited movement in my birth plan, and MW has agreed to stitch with me with legs flat on bed but slightly apart, and to work with me to find least painful position. Physio thinks pelvic damage during stitching is unlikely (even in stirrups) as I would not be straining and pushing.
I hope that helps, and that you get to see a physio soon. Any chance of finding one privatly?