I totally hear where you're coming from. My fiance and I had a blowout the other night, where shit got real but we're good now. I worry about lots of things all the time, I'm easily swayed and change my mind all the time. We're getting married in less than a month, so I'm trying to just take it easy, stay organized, keep positive, talk when I need to, disconnect when it gets too much, zip the lip when I feel the negativity coming by reading a book, watching my favorite show, etc.

Hang in there. It's gonna get better. Do you have insurance? Maybe you can go talk to someone to help cope. I'm sure your fiance would appreciate it and it could help with what you're going through.