Before I got pg with DD2 I used to run a few times a week, just for half an hour. I never loved it, but it was convenient and cheap. I've had lots of pelvis problems during pregnancy and postnatally, and my first attempt at running at the weekend triggered a lot of pain for several days after. I've had physio and the pain was gone before that so it's a real downer to have it come back after months of being pain free. I really want to get fit again - what alternatives to running are there which I can do fairly easily and in about half an hour a few times a week?