Did i miss out on getting BCH during the Aug fork? U Tell Me...i'm anewbie.

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I sent BTC from Coinbase to my Electrum wallet just prior to the August fork, did i miss out on getting BCH?
Should i put it back into Coinbase for the Oct fork- so i can get Bitcoin Gold?

Did i miss out on equal shares of bch because my coins were in a wallet and not sitting in an exchange during the last fork?
Am i risking/gaining anything by putting btc back into my coinbase (or any exhange) account prior to the upcoming Oct 25 fork?