All that you have to do right now is to hold.
Don't bother with checking the price every few minutes, even days. Just relax and wait for better times.
There was a spike and big drop right after, it happened many times before so I think it is absolutely possible for it to happen once more.
Don't panic and take it as a lesson for the future. I'm sure there are plenty of people like you, that's why we see this huge "sale"