not sure how to feel..

so my little sister is pregnant and I can't seem to be excited for her she's do in march. my husband and I have been trying for six months and it just feels like it's taking forever. 😢 my sister can't even take care of herself let alone a baby and this was planned for her and her "boyfriend" who won't even get off his butt to get a job. how do I get excited for her feeling like I should be the one pregnant? all my husband and I want is a baby.