Just a note: while there are legitimate reasons to worry about things, sometimes people worry simply because they are psychologically prone to worry (they just switch from one convenient object of worry to another). The former case can be solved by thinking about the risks and possible precautions; the latter requires psychological help. Please make sure you know the difference, because no amount of rationally discussing risks and precautions can help with the fear that is fundamentally irrational (it usually works the opposite way: the more you talk about it, the more scared you are).
Just a note: while there are legitimate reasons to worry about things, sometimes people worry simply because they are psychologically prone to worry (they just switch from one convenient object of worry to another). The former case can be solved by thinking about the risks and possible precautions; the latter requires psychological help. Please make sure you know the difference, because no amount of rationally discussing risks and precautions can help with the fear that is fundamentally irrational (it usually works the opposite way: the more you talk about it, the more scared you are).