You didn't lose if you sold in profit before a sudden rise in price of any investment you're holding. Don't act greedy and possibly loose all you already earned. Personally I have been in similar situations which one happen recently although I wasn't mad since I knew I followed by existing strategy.

Like I always say, it's better you sell in profit then lost irrespective of what the profit is unless you're planning to invest from a very long term. That's the only time you should avoid any side distractions and focus on your goal.