Ok, so you two have me wondering where I read the before or after antibiotics thing. After a little bit of looking I found this article that is probably the best plan of attack:
"During antibiotic therapy, a good dose is between 6 and 25 billion total viable probiotic cells per day. They should be taken as far away from the antibiotics as possible (for instance, if the antibiotics are to be taken every eight hours, the probiotic supplements should be taken four hours after the antibiotics). Probiotic therapy should be continued a week to a month beyond the antibiotic treatment period to replenish any beneficial bacteria lost during antibiotic use. Probiotic use should not interfere with the effectiveness of antibiotics."