I'm 21 weeks pregnant with my first and am currently suffering with awful pains at the back of my upper left leg underneath my buttock. It's becoming worse and it's affecting getting up after sitting down, putting weight on it and turning in certain positions. Anybody else suffering with this? It only seems to have got worse this week. I'm currently in holiday so wondered if it was made worse by the car journey to get here - 4 and a half hours with 3 breaks. Trying some cat stretches to help and also some pregnancy yoga. The pain is really quite bad when it twinges 