Sorry to hear this, I understand that you are using D’Cent wallet (which I’m not personally familiar with).
A mempool transaction should hopefully clear up in a few days. If it doesn’t then you have a couple options to try and “push” it through.
Replace By Fee
The Replace By Fee method is the simplest and most reliable way of pushing through a stuck transaction. It involves rebroadcasting the unconfirmed transaction again, but this time with a higher fee. This works as long as the unconfirmed transaction really is unconfirmed, i.e. it has zero network confirmations. This way, the double-spend problem is avoided. Many wallets such as Electrum allow you to replace a stuck transaction with one with a higher fee.
Child Pays For Parent
The Child Pays For Parent method is a bit more technically advanced than Replace By Fee.
The idea is to create a new transaction (B) - the child - which uses part of the unconfirmed transaction (A) - the parent - as an input. This new transaction should have a relatively high fee attached to it. For miners to confirm Transaction B they will also have to include Transaction A into the block. If the fee of Transaction B is high enough to pay for both transactions, miners will prioritize it.
https://en.bitcoin.it/wiki/Replace_by_fee
https://bitcoinelectrum.com/how-to-do-a-manual-child-pays-for-parent-transaction/