I need help ladies, advice, anything would be nice.

Catalina
Me and my husband we been trying for a child for a year and 8 months now and no luck, he is 29 and I'm 22. I have a daughter from a previous relationship and he has a son from someone as well, he got her pregnant in a one night stand. One of my exs that I tried with for 6 months before my husband, he got a girl pregnant in one month. Now.. I feel that it's Me....i have not done tests yet it's too expense and I don't have insurance. But the thing is I feel like leaving my husband.. I feel bad and sad and I'm all types of emotional, a child is a deal breaker to me, meaning I feel like I much rather be alone and be a single mom as I was before I met him, rather then being unhappy in this marriage. Ttc, has gotten me so depressed, anxious, u name it its there. I feel like I have lost myself. My husband he is a good decent man but after marrying him, a lot of drama SD bad things has happened. And a lot of baby drama from the mother of his son since I got I was the "new gf, step mom etc". I feel that if I leave I won't ever have to worry about the drama.. The stress... My husband.. And it be me and my daughter by ourselves. It's wrong to want to leave? It's wrong that I rather be with my only true daughter? I take care of his boy since he was 6 months old, I got love for him but I don't see him as my own because of the drama.. It's so hard.. I know I don't even know if it's me that can't have more kids and we got no money to pay for treatments.. Why wait another year and then leave.. Be more miserable and make my husband miserable.. Don't we both deserve a good chance? I feel bad but the relationship has not grow for better.. Now why keep trying? It's any reason why should I stay with a man.. Even if I'm so unhappy. Yet I'm scared to make the wrong decision and destroy my marriage but.. When I ask myself it's worth it? I got. No doubt that is Def not worth it..