Ttc for the past 10 months. Every month I get so upset. I had a miscarriage last April. My sister…

Ttc for the past 10 months. Every month I get so upset. I had a miscarriage last April. My sister and I got pregnant at the same time we were a week apart. Now I see my niece and I love her but every now and then I get so sad because I couldn't had mine.