Thought I'd pass this on as I'm sure we're all keen having colicky babies:
My osteo suggested taking vegetarian acidopholus tablets (available from holland and barrett etc.) from about 35/36 weeks onwards. These help to build up healthy bacteria in your stomach which in turn help your body to deal with antibiotics should you be given them during or after labour. They are also apparently helpful for the baby (I assume they are passed on via BF) as it will be born with literally no bacteria to help it to deal with the antibiotics and the ABs can make the baby colicky as its stomach is so sensitive in the early days.
For those not aware, you are sometimes given antibiotics during labour if they have any reason to believe you've become vulnerable to infection - ie. tearing, labouring 12 hrs after water breaking etc.
I am only passing this information on and am not qualified to verify any of this!! Am a first timer trying to do my best for my PFB, and for my sanity!