Yep everything should be fine - the dr told me that when I had gastro (and nasty cramps every 15minutes!) the most important thing was to keep your fluids up so as not to dehydrate the baby. The pains are shocking aren't they? I took it easy until they had subsided, then went back to normal but couldn't feel the baby moving much after that gastro bout. Then I had my scan today and it turns out the lack of movement (or me feeling it) is due to the placenta being in front and that it is unlikely the gastro would have harmed my baby. She is perfectly healthy in every way!