mate .....
I dont own any share in bnb but in BBP.
you have three options.
Sell
Hold
Buy
I know it crap that people have lost alot of money on BnB, but it is money. You may not see it but you can make it back. Try and just relax and forget about, because stressing out about an outcome you cant control is not really going to help, unless you can change the outcome.
Take it easy brother.