Mahalo Dhana, I am so sorry for all of your losses. I was widowed young myself, and had a number of deaths/passings a few years in a row. While I do not have church to which I can point you, I would highly recommend picking up a copy of The Grief Recovery Handbook. The title doesn't do it justice. The use of the word "recovery" makes it sound like a 12 Steps program, which it is not. It is the only book I have found which addresses the emotions of grief and doesn't just talk about them. I think the latest edition is an anniversary edition. You can find it at Amazon and likely your local b&m of Barnes and Noble.
I hope reading it helps you.
Despite what some churches seem to inculcate that we're supposed to be "over it" in a short period of time, the book does help, regardless of faith/non-faith. And regardless of religion, God Him/Herself is still with you. I say that to encourage you, not to just utter some trite pedantic muttering. In our sobbing, God is still with us. "I will never leave you nor forsake you" are words to which I cling throughout my whole life.
Blessings to you on your path,
April
PS: I can cite the link to it at Amazon, but since this is my very first post, I didn't want to get what could be misconstrued as spammy... If you want me to cite it, please reply to that effect here, and I'll go locate it for you.