I've got a gym membership until August'11 but tbh I haven't gone since before we moved, which was 2 weeks before Christmas. Today however I thought I'd slowly wean myself back into exercising and used the swimming pool instead. It was lovely, very gentle and relaxing too. I'd highly recommend it. I was getting a little scared 'cos I feel my bum is trying for world domination right now so knew I had to do something. Last time I asked my MW was very pro-exercise as long as it was gentle and no weights but I do need to check with her again once I hit the 3rd tri or a little before.