To securely get your BCash, I recommend you to follow this:
1. Create a new BTC Wallet, let's name it {B}.
2. Transfer all your bitcoins from your current btc wallet (let's name it [A]) to the newly generated btc wallet {B} (so that nothing goes wrong). (Only the bitcoins associated would transfer, the BCH would remain there.)
3. Install Electron cash, preferably on pc other than your primary pc with btc electrum wallet.
4. Use your seed from [A] in electron cash. The wallet should show your BCH.
5. You can send the BCH to an exchange from electron cash and get BTC in your new Wallet {B} instead.