I'm 18 and am pregnant with my second child, am I being irresponsible for keeping it?

Your daughter is till very young to have a sibling and of course it will affect her but if you want the baby it is your decision completely to keep it it is not like you CAN be a GREAT MOM to two young children but 13 dollars an hour is not much if he is supporting you and 2 children it will be extremely hard to get but its your baby and you have to keep it and you can be happy maybe you can both work for more money your very young but that does not mean your not a good mom