Dear Pam,
I am so sorry to read of your losses. To lose a loved one is always hard. But to lose two very significant loved ones and then loosing them within a few days of each other, can be ultimately devastating. So again you have my condolences.
Now, in addition to reading through the forums relative to loss and grieving as suggested by another poster, I recommend a very good book which has helped me greatly as I have sorted through my own grief and pain at many, many losses over the past few years. The title of the book is Grief Day by Day: Simple Practices and Daily Guidance for Living with Loss by Jan Warner. I hope it blesses you!
May God bless and strengthen you day by day.