Foster Parents

Al
My husband and I are TTC and also starting the process to becoming licensed foster parents. As far as we know, we are able to have kids so we are not foster parenting because we can't have kids (not that it isn't okay) but because we feel that we have the time and love to care for other children.
Has anyone here been a foster parent while TTC, pregnant, or having small children? What advice do you have for us?