Seems like everyone is getting pregnant except me

We have been trying for 14 months. I had a miscarriage the week of Christmas. Literally 8 girls on Facebook announced they were pregnant the next week and more after that. On top of that, my sweet dog I had for 12 years passed away in June. I wanted her to meet my baby. It might sound silly, but she was the first one I told when I found out I was pregnant. She was my buddy for 12 years. I would have been due this month. This year has been the worse year of my life. I'm tired of all the fertility tests. I had surgery last week to remove polyps in my uterus. Another girl announced she was pregnant today. I want to feel happy for them but I cry every time someone announces they are pregnant. On top of all this, I found out I'm gluten sensitive and lactose intolerant. I can't eat bread or cheese. I'm so ready for something good to happen.