Too much caffeine can be a risk factor in miscarriage - but I think its like over 10 cups a day or something??

I just went down to two cups in the first trimester - then just went back to my normal 3-4 cups of tea a day, plus a truckload of chocolate!!! Nothing appears to be wrong with my children

I know my sister drinks about 2L of coke throughout her pregnancies - and she has had losses - but that was cos of a clotting disorder rather than too much caffeine...she has pretty small babies though - don't know if thats related??