What's the best way to navigate this wedding situation?

So my cousin is getting married this summer. We grew up together but aren’t that close anymore. My mom got an invite months ago but I have not, so I assumed I wasn’t invited. Over the holidays, we all were together and this came up. When someone else brought it up, my cousin said, of course you are invited, but she didn’t say she sent me an invitation. But I still think it’s awkward and strange that I didn’t actually get an invitation in the mail. Everyone else in the family insists I am invited. I feel like if you don’t get an invitation with your name on it, you aren’t invited. I have no idea why I wouldn’t be invited, but I am living abroad this year so it will cost about $1k to fly back for this anyway. I wouldn’t want to offend my cousin or my family by not showing up if I am expected to, and I wouldn’t mind going, but given the invitation situation and my current address, it just seems easier not to go. What is the right way to handle this situation? I don’t want anyone holding a grudge because I did or did not show up. My family is not open with feelings so I feel it would be awkward to confront my cousin directly.