I comes at previous price structure that was major.
Thus, if the ECB conference and decision is overall , I'll be looking to short this. If the ECB brings news for the euro , than we will wait to see the market's reaction. If the bulls don't take decisive control, I'll short the hell out of this pair especially with NFP coming out Friday - where I expect the number to be good.
If, finally, ECBs conference and decision are and the market reacts positively to it, I won't get into this trade, of course.
But the key message is: EUR/USD could go down but do not take action before ECB!