Can soda hurt the baby?

Not directly. Soda is really unhealthy. It is very high in sugar which can affect you. It is very acidic (i quit when i verified that coca cola can actually rid your car battery of build up by pouring it on the battery). The diet drinks contain artificial sweeteners which have negative affects as well. It is best to not drink it. I know of no direct fetal problems at this moment. Do not give to babies /toddlers.