I have a cup of coffee a day. I don't think I drank any soda with DS, but I don't normally drink it so it's not some big sacrifice. I have had people try to guilt me about it. My doctor thinks its fine and based on what I've read the study linking coffee with an elevated risk of miscarriage didn't account for morning sickness. If you have m/s you're more likely to carry to term, but less likely to be able to drink coffee without ralphing.
My phone is smart, I am not. All spelling errors are my own.