Can't I ever just be happy.

I am so down. I had my GBS just over a month ago and I did great. I am down from 260 (January) to 215. Oh happy day...Right. WRONG.
I had been experiencing some pain in my lower pelvic region. I didn't know what it could be so while I was waiting to get this surgery over with I checked around on the internet. I came to realize that that pain was likely my ovary. I did not want anything to stop my surgery and made up my mind to speak to my doctor the minute surgery was over... which I did.
My doctor sent me to get an ultrasound.
What came back was not good.
I am having a further MRI next Sunday.
Wow all this just to have Cancer.
The worry is driving me mad.
Just as I had something to be hopeful about... bammmm.
It's like somebody up there doesn't like me. I don't know why because I sure love him.
This will likely mean another surgery and then possibly chemo.
I am just immobilized with fear.
I am not ready to die.