Kellymom was a useful resource.
You can take ibuprofen while breastfeeding, I find it more effective than acetaminophen for pain and for fever reduction, and for pretty much anything.
You can take psudophederine, but it can dry up your milk supply so only use when necessary.
Those two are pretty much what I take when I'm sick, only not the psuedophederine unless I absolutely have to.