Elsa - I am so very sorry for your loss - it's indescribable to lose a pet; it's a kind of love that is unmatched elsewhere.
Please do tell us about your lovely April, if you feel so inclined. We're here for you.
Btw, we also have a Rest In Piece/Grieving section that has some articles on surviving the loss of a pet:
In Memory Of... (R.I.P.) - YorkieTalk.com Forums - Yorkshire Terrier Community