Hello and welcome
You are so young to be filled with so much fear, but now that you have accepted Jesus into your heart, there is no need to fear anything. You are His child, and He is yours, to turn to whatever your need is, or however your feeling. He will understand any doubts you have and will teach you to trust Him. If you are willing to continue to simply pray, talk to Jesus just as you would any of your friends, it is how you draw close to Him, and draws Him close to you.
The Bible does talk about the judgement of God upon those who reject His plan for us, but it holds many many promises for those who accept Him as their Saviour. One of the most beautiful promises found in the Bible is in John 3:16 "This is how much God loved the world: He gave his Son, his one and only Son. And this is why: so that no one need be destroyed; by believing in him, anyone can have a whole and lasting life.
I suggest when you read the Bible you start at the beginning of the New Testament, this will help you to see the whole plan He has made for us, and you will find that there`s nothing in that plan to be afraid of as one of His family.
2Pe 1:2 Grace and peace to you many times over as you deepen in your experience with God and Jesus, our Master.
2Pe 1:3 Everything that goes into a life of pleasing God has been miraculously given to us by getting to know, personally and intimately, the One who invited us to God. The best invitation we ever received!
2Pe 1:4 We were also given absolutely terrific promises to pass on to you--your tickets to participation in the life of God after you turned your back on a world corrupted by lust.
2Pe 1:5 So don't lose a minute in building on what you've been given, complementing your basic faith with good character, spiritual understanding,
2Pe 1:6 alert discipline, passionate patience, reverent wonder,
2Pe 1:7 warm friendliness, and generous love, each dimension fitting into and developing the others.
2Pe 1:8 With these qualities active and growing in your lives, no grass will grow under your feet, no day will pass without its reward as you mature in your experience of our Master Jesus.