Megsmum, I am so sorry about your loss
Having recently gone through one myself - although not as far along as your angel - i can relate to your feelings.
Although no one can magically make everything better it is good to let it all out where and whenever you need to. It's ok to get angry, feel ripped off and rant about it. It's ok to feel sad, hurt and cry about it.
Please remember to look after yourself and if you can, use the support of your loved ones to help you get through the pain.
Thinking of you