Welcome to HealthcareMagic.
I can understand what you are going through.As you have figured it out , best way is to let it happen when nature decides.
Coming to your question ,
Jack3d has Maltodextrin , caffeine ,Magnesium
as crucial components that can affect you.These components can effect the growth of the baby , though definite actions and studies are not established about this.
I advise you not to take a caffeine supplement like Jack3d ,rather go for non caffeine supplement like proteinex
Hope I answered your question.If you need more information feel free to mail me.