I drank spoiled milk, suggestions?

i drank spoiled milk on accident. the date said 2/7/11 (EW!) but i could not taste a difference. i only noticed a clump in my cereal, then stopped eating after about 1/3 through. Then i looked in the carton, some mold around the edge of the tip, but not clumpy milk. just wondering if theres anything to do besides wait, stay hydrated, and not drink it. haha. do you think i would get food posioning?