sister/daughter wants a baby!!

Ashley • I can`t wait to be a mother!!!!
Me and my husband have been trying to get pregnant for over a year now and still nothing! Back in October we took over custody of his 15 year old wild little sister! Wild as in sex opposited bipolar ADHD and a compulsive lier! My hands are so full. I alone suffer from depression and have horrible anxiety. 
We all get along great for the most part she has her days but we all do I love her so much but I fear taking on all this stress is hurting my chances on being a mom!