Yes all the time, it takes me by surprise when i think i have lost a trade only to come back later and find out that i have profited from it, so it means hat i did the opposite of what i was to do, its a good thing but for any professional forex trader this should not happen at all, you should make sure if its a buy you buy and a sell you sell, mistakes like those cost you a lot and you simply can not afford to make them not ever.

