Kylie...I can remember that pain all too well, at 3 weeks you are just coming out of the fog and into reality, and it really and truly sucks. I felt consumed by it and very lost. My 27 year old sister died suddenly on July 31st 2010, she left behind a 3 year old daughter that my mom is now raising. I live 4000 miles away from my family and some days I feel like that keeps the wound open. I was diagnosed with post traumatic stress disorder after my sister passed away and have developed social anxiety. Therapy has been my saving grace and I want you to know that talking with someone about how you are feeling is the greatest thing to do. I know it seems like they can't understand what you are going through (thats why this place is so wonderful!) and they likely can't, but I sat with my husband almost every night and said "I just miss her" while I cried and cried. I can tell you that after passing the year mark, my heart felt a little bit lighter, and I found a purpose in living the life she wasn't able to live. I hope you are being gentle with yourself, this is a very very tough time. I wish you nothing but lots of love and patience with yourself. 

Stephanie