Drinking distilled water?

Is it ok at all to drink distilled water? Well I sent my BF to the store a couple days ago to pick up 2 gallons of water. Well I already finished the first gallon of water, The other jug was still in the fridge well today I was thinking about the lid not being black the last time so i went to look at the jug and it freaking said distilled water! Im so pissed about this. And another reason is cause Im 11weeks pregnant! I just want to know if my baby will be ok Ive stopped drinking it after finishing the first jug and just now realizing what it was. Ive been so thirsty after drinking that first jug.. :( should i be concerned of mine or the babys health now?!! Please help me out!