When to exit the trade and cash it:
Remember that the buy signal was given at the same direction of the Trend,
1st option exit: If we have Divergence against our trade
2nd option exit: When price hits daily pivot
3rd option exit: When price hits the monthly and weekly pivot

Always pay attention to economic news, 30 mins after NY open, all news were against US Dollar making the price plunge.

https://www.investing.com/economic-calendar/