I will drink Diet Coke made with Splenda so that my baby does not get the aspartame while I am nursing. I hate the caffeine part but sometimes I need a little to help me out since I as well do not like to drink coffee.

I doubt it is having any affect on the colic as the colic is a beast of its own. My baby had colic….and I wasn’t drinking any caffeine! Good luck. Check out my funny colic story
http://voices.yahoo.com/colic-recurring-nightmare-10935560.html?cat=25

Yep. I went cold Turkey the day we got the positive pregnancy test. I was a 2-large-coffees-per-day drinker until that day. That first week wad HARD. Halfway through the second trimester I started allowing myself one small regular a week. Then a half-caf a few days a week …

After she was born I went cold turkey again but by 9 months I was back to a large half-caf 5 days a week. I went to strictly only decaf at 9 months and stayed off so far 2.5 months later.

But I use real sugar and it’s coffee – not frappucino or pumpkin spice or some other god-knows-what’s-in-it beverage.

I wasn’t a big caffeine drinker before my children so I didn’t suffer having to get it up.
However, I did have to remove all dairy and soy from my diet for two of my children due to their intolerance issues. This meant no milk, no chocolate, no cheese (and I LOVE cheese), it also meant almost no junk food of any kind, etc. etc. You would never believe all the places that dairy and soy products show up.
At times, I thought I would never survive. But I did. Between the two kids, I was on the “diet” for 6 years. You learn, you adapt and you do it because you love your child.

I allowed myself one coke a day while pregnant, though I tried to avoid it if I could. I had given up caffiene altogether once my son was born, but now that I’m back at work, I’m drinking a couple of cups of half-caff coffee in the mornings. I’m still nursing, but there is no noticeable reaction from my son at all.

Ok, I just read that link you included and it says that 3 cups of a coffee a day are fine! A diet coke has less than half the caffeine in a cup of coffee, so I sincerely doubt a one coke a day habit (or more) is having any effect on your baby. I drank soda in moderation during my pregnancy without any guilt and continue to drink coffee daily (my baby is now 9 months) while EBF and I have an occasional soda as well. I think us breastfeeding mothers have enough on our plates without giving up everything under the sun that might be causing our babies to be irritable when, in fact, the irritability disappears magically around the 4 month mark with or without any dietary modifications. And I say this as the mother of two dairy intolerant babies who saw not just irritability, but much more dramatic evidence (that I will not describe in detail) of an actual dietary issue.

I drank 1 diet coke per day while pregnant. Some days 2, but very rarely. Then when the baby was a newborn I had almost no caffeine (hormones did the trick, plus I napped when I could, and didn’t want caffeine to interfere with my ability to sleep when I needed it). I gradually added diet coke back into my life when I started back at work, but was careful not to also have coffee. Welp, the baby is almost 8 months old, still nursing, and I drink…um, more diet coke than I want to admit. As much as before I got pregnant.
He seems fine. Not irritable, is a great sleeper. I worry about the chemicals, but…you know, he’s never had formula, never had commercially prepared/processed food. If he’s getting some diet coke chemicals passed throuhg the breast milk it is a miniscule amount and it’s making it possible for me to function