happened this afternoon whilst i was lifting dd into a swing. it's the small of my back to the left. it's radiating down my left leg too. a bit like sciatica when i was pg. god, it's really painful when i move, especially when i bend down. i haven't had any pain killers (though have had a glass of wine....). what shall i do? i need it to be better. waaaaaaaaah. tried lying on the floor, not much good. heeeeeeeelp.