Febes what seems to be working for me is a combination of paracetamol and paying particular attention to my posture. I find sitting upright, and keeping my knees together (oh how my teacher at school would be proud) as much as possible. Even turning over in bed is better with my knees together!
Last night was really bad and I found that the heated seats in the car made a real difference, so I've bought one of those heated gel pad things from Boots.
In my last pregnancy I learnt that doing too much was a problem but doing too little was also bad. I've noticed that if I spend too long in one position then I am quite stiff, so an evening in front of the television leaves me feeling quite bad. My ironing pile is dwindling rapidly as a result!
Each day I try and build in some time walking around, usually at the park with DS, but the other day we spent too long in the park, followed by the supermarket, and I was exhausted afterwards. So planning the day, with rest, is definitely the way forward!
That said, I don't think I'm bad enough for physio and stuff like that, as I think the things I am doing are quite effective. Sometimes the pain does get too much, and I posted recently about wanting more painkillers!
I'm also wondering if my back is bad because we went away at the weekend and I slept in 2 really uncomfortable beds. All of my post-pregnancy back problems went away after buying a memory foam bed and pillow and now when I sleep on a normal bed, with lots of pillows, I do suffer for it! (Just call me princess, eh?)