don't know what to do anymore. looking for advice.

I'm gonna start off by saying a little bit about myself. I'm 22. Married for 3 years today. Im stressed, overwhelmed, depressed and everything in between. I just found out my food in my stomach don't digest quick it does slow. I also found out my lungs and airways are in bad shape! So I see a sleep doctor and he's also a lung doctor so I did a home sleep study because he said it sounds like I have sleep apnea but turns out I stop breathing 2 times an hour and my oxygen level is suppose to be in the high 90s but mine is in the low 80s so now I have to be put on oxygen while I sleep!! So now I'm seeing so many doctors and it's not cheap! We've been trying to conceive for over 3 years almost 4 now and I had to stop early this year because of my health. My asthma o guess is so bad it's making my lungs bad. Yes I'm a smoker but I'm trying to quit and it's not easy at all. It's been horrible. And don't know how too. I'm in this position of being scared of it all. I'm so afraid people that find out about all this will leave me because I'm so broken!!! I've been depressed. I don't drink and I've found this stuff out so I've been drinking a lot the last couple of days and been smoking weed. That's not me but it relieves some stress. 😟😟😟 any advice is welcome.