I quit drinking coffee when I got pregnant with my DS, but after a month I was having a hard time functioning I had terrible migranes for weeks and was very exhausted. So I went back to drinking just every now and then. I drank a cup or so after he was born and noticed he had problems sleeping. It got better after a few months, so now he is almost 10 months and I drink about 1-3 cups a day. Mainly in the morning.