newly ttc and scared to death..

Tia
My wonderful husband and I have decided to begin ttc last week. For all of those out there who have been ttc for years, I'm sorry if I appear ungrateful, I'm not. I have a ten year old with a terrible ex and feel the amazing parenting experience I would have now was much less when I had my daughter. She's amazing. But I've got the baby fever and everyone around me is expecting. I want to be so happy for friends when they say they're having a baby, but I find myself locked in the bathroom in tears. Can I have a baby? I hope so. I had a miscarriage around 7 years ago and I've been scared to death of trying again ever since. I'm thankful to this app, its sad but also empowering to see that I am not alone. My pups are not cutting it. I feel void and am hopeful for a little bundle, only this time - to see the whole way through. Am I alone in this? 
Also... ttc: is wine a no go? The app says it lowers fertility. Jw what everyone else is doing? I exercise more regularly, I eat healthily. I'm probably going to quit caffeine (my morning coffee) to avoid miscarriage. I feel stupid making life changes now instead of when finding out I'm with child. So many emotions. It wasn't like this before. I say to my friend, "guess what!?" And her response was, "you're pregnant?" And of course I say, "not yet, but we are ttc." Doesn't matter apparently until I'm pregnant. So I'll keep my ttc talk here. 😬