Gave spoiled milk to my child by accident

Ana • Momma of the sweetest baby boy🌟

FTM here. I am supper worried, we gave our 7 week old son spoiled breast milk by accident. He drank about an ounce super fast because he was very hungry, then he started crying very hard. We didn't realize why he was so upset and crying until we tried the bottle. Will he be ok? He hasn't spit any milk yet and he is sleeping. The milk tasted so bad, I feel awful.