It is scary not knowing about your future but you are not alone. You feel the fear probably because you feel out of control. You don't have to feel that way if you start making little steps towards taking some control back. What ever that may be, write it down. This is where making some goals for yourself comes in handy. Goals and accomplishing them help us to gain some control over what we see as having no control. It is mostly a mental game but it works.
Keep reading other people's threads here and it does help to post to them, too. It feels different when you are on the other side posting advice. Builds confidence in what you are doing and saying for yourself.
Just know that you will be okay. Keep telling yourself this. Take deep breaths. Go and have a bath, go for a walk, watch a funny movie.