Are my BTC now BCH?! What happened?! Is my money lost?
If what you're saying is true, this sounds like a big problem.

BTC and BCH are two completely separate blockchains.  It's impossible to send bitcoin from one to the other.  

If you send BTC to an address, then it's always going to be an address on the BTC blockchain, not the BCH blockchain. 

So if you sent your BTC's to address X, then you sent them to address X on the BTC blockchain.  If you don't own address X on the BTC blockchain, then you no longer have access to those funds.