Is cocoa really that bad?

I love drinking those hershey's regular cocoa in the mornings, and at nights when ourtoddler is fast asleep and I can do my studies. Is it really that bad having 2 cups (2 Tablespoons in total) a day? I read some unpleasant truths about cocoa beans whatsoever.. Everytime I drink it, it energizes me and kinda wakens me up. Is this a bad habit? and plus, I'm still nursing our tot, (she drinks both, breastmilk and soymilk) is this going to have an effect on her?