If you don't know this then you shouldn't have traded, and were misinformed. They're considered complex instruments for a reason, and the ease with which the masses trade them is something of a tragedy.
This has happened multiple times in the past and will happen many times again, as there's nothing new under the sun (from Livermore, one of the greatest speculators).
A fun little book that I like to recommend: "Confusion of confusions". It was written by a Jewish trader working with the 1600s Amsterdam stock and bond exchanges. It is a good proof of how little things have changed, you'll understand pretty much everything once you map the terms and concepts to their modern equivalents.