Well, you have to trust in Divine Mercy because God is our Father, and He will never abandon His children who trust in Him. How can a father abandon his children? When you truly believe in the fatherly love of God for you, you don't have to worry about being in purgatory without anyone praying for you. The Church prays for all souls in purgatory, every single one.
You will also be remembered, not personally by name, but in every Mass, the Church is praying for the deceased souls in purgatory. Many Catholics are praying for those souls for whom no one is praying, and there are even masses celebrated for them. I have personally celebrated masses with the intention that people gave me for those souls in purgatory for whom no one is praying.
Therefore, don't be worried because you will also be prayed for in purgatory.
Dear visitors of Gloria Dei and all who have already written or who will write a personal message to me. I am grateful for your attention, your kindness, for your spiritual support and especially for your sacrifices and prayers for me. God may reward you!