I Would Like An Opinion On My Poem?

a poem about walking away from my mother for the last time after her funeral. my mother was dying of cancer and i got married so she could be there, unfortunately she got worse just before the wedding. but i did get married at home by her side while holding her hand. it was very emotional. please be honest as i have never wrote before, i am looking for honest opinions / suggestions.
Our final goodbye
I had to leave your side today,
I had to walk away.
And though it tore my heart apart,
I just couldn’t stay.
Mom for you I tried,
to be strong and brave.
But I just couldn’t help but cry,
as I left your grave.
All I thought about mom,
was the good times that we shared.
My beautiful and gentle mom,
and oh how much she cared.
You fought so hard,
that I must say.
Too be there for my wedding day.
Although you were too sick to share,
our dance that we had planned.
While I took my wedding vows,
you were there and held my hand.
So now I must go on mom,
without you in my life.
An awful thought that deep inside,
cuts me like a knife.
And though it tears my heart in half,
to know that this is true.
It is the last and final thing,
which I must do for you.
There is just one last thing mom,
that I hope for you.
Just one last and final hope,
all that I can do.
Just to hope your pain is gone,
and that you rest in peace.
Something that I pray to god,
Too give to you at least.
So as I walk away mom,
As I leave your side.
I leave a piece of me mom,
a hole left deep inside.
So I guess then this is it mom,
Time for our final goodbye,
A memory that will always,
Make me stop and cry.
And though I know it’s not forever,
and I’ll see you again someday.
Our last and final goodbye,
Is all we’ll have today.
DavidDC114