I want to be able to conceive baby #2 but it's difficult

I find it really difficult sometimes to relax and not be stressed out because of my work schedule I usually don't get off until midnight. So I tend to sleep all day basically until the afternoon usually. I don't really go out much and my daughter is kinda upset that I'm working alot and I understand where she is coming from but since my husband's car accident about 2 yrs ago he hasn't really been able to stand or walk for long periods of time and there times where his legs will give out on him. And he is overweight but is trying to alter his eating habits as much as possible. I try to get him to excercise but alot of times he just doesn't do it although he says he is taking care of himself but most of the time I'm not home and can't watch him and remind him he needs to eat better and excercise more but I work alot and everytime I try to talk about it we kinda end up in an argument where he feels like I'm nagging him about it but I'm not trying to I just want him to be able to stick to his diet and excercise a little bit. I'm on my feet all day 8 hrs a day sometimes more and I get my daily cardio while working but I don't depend on that only I go to the gym when I can and try to eat better to. I'm always looking for alternatives to junk food and trying to eat more organic foods and I try very hard to get our family on better eating habits and trying to stay active but it's not always easy and sometimes they act like I'm trying to punish them or be mean but I'm not. Our family is currently going through some depression and anxiety a little bit but were trying our best not to let it get to us. I feel like noone is really listening to me and it's frustrating me. I feel like he's just telling me what he thinks I want to hear. I don't know what to do. My family is important to me and I care about them so much but sometimes it feels like thing's are falling apart a lot. We don't communicate with each other that much like we use to. It seems like we argue and fight alot. And I'm not sure how it gets to that point because all I want to do is communicate and talk more. I love my husband and want to do what's best for our relationship and our family. I'm just feeling depressed and anxious about it.