Kaydee (Feb buddies) has galls stones ATM, and i think from memory started having attacks soon after she had Ben and she now has to have surgery.

Not sure about treatment during pg, but most of the time they have to be removed. My Mum suffered with them for years and she eventually had 99 removed.

For the meantime, try to avoid foods that can trigger an attack - fatty greasy fried foods and some spicy foods. But this could be different for averyone.