Green eyes monster 😡

I've tried on/off again for two years now for a baby, in total of the on, would be a complete almost over a year, I've had one miscarriage, and one still born. 
During these two years of on/off again, it's always been with the SAME man, we've gotten our lives together, married & bought a house, working, I'm finishing school. 
And YET woman around me... who do drugs, sell their bodies, out running the streets can get pregnant and have a healthy baby! Honestly I've NEVER done drugs, or anything like that! But to this point, I feel I should throw it all away! Maybe running the streets, and getting a high, will finally get me to where I want to be. I just want one baby, one. I would be happy with just one, and there are woman who are having 3 with different baby daddies and aren't even giving their children a settled life! Why? 
I have a three bedroom house, with a lot of land for children to run and play, I have a loving husband, who is great with children! (You should see the way my nieces adore him!) 
And yet! We can't have children, I can't seem to carry full term, they have abnormalities, we've been trying for almost 7 months now, and haven't gotten pregnant once, I have a pretty regular cycle. 
I've tried all these herbs, and different things.... and nothing works.