Im so scared for my baby?

i have a beautiful one month old girl. I love her so much. when i was pregnant i did the most stupidist thing and kept smoking. i know how pathetic and selfish that is . i didnt realise it was a big risk factor of sids and now im petrified. i just read some stories on sids and im so scared of loosing her. i look at her and am beside my self with fear that ill loose her. i love her and if i loose her i will not live.