Pain in the arse...

The lower back pain (aka pain in my arse) that I had a few weeks ago is back. I'm walking along (or waddling along, to be more precise) without a care in the world when all of a sudden I'm writhing in pain, gasping for breath and involuntarily clutching my arse with both hands! Its really embarrassing. I'm big enough now for people to think I'm all of a sudden going into labour. Its something to do with one of the babies lying on the sciatic nerve. I hope they get off it soon, if only for the sake of my dignity.