Hi Amaya
Your post really touched my heart as I too lost my brother, just last year, he was 19 years old, well young.
Grief is such a journey and one we will ultimately be on for the rest of our lives, the pain does change and the way we cope does improve but we will always have that one little spot that always aches.
You will always have the memories and the wonderful times that you shared, you will always be his sister and you will always have pictures and things that make you smile when you think of him. Rely on these to pull you through the hard times. Also know that it is ok to feel, to feel sad, to feel angry and to feel like you have been ripped off. Cry and let the tears out and let the pain flow out too, then try to have something to bring you back and to help you to move forward.
There is no time frame to this and do not let anyone tell you otherwise, you take the time you need to do the healing that you need to do. Reach out though when you do need a hand to help you through a particularly hard time and also let those around you know how they can help you as they will want to support you too.
I am so sorry for your loss Amaya, you are with people who will sit and share and talk here and give you a virtual hug as you move through your journey of grief.
Sending you strength.
Sarah