My husband and I both went through cancer this past year, at the same time, it was awful and took every ounce of courage I had to stay positive and healthy...and it paid off, we are both doing fairly well today, cancer free but being checked often over the next 5 years.
So I do understand your fear and I hope you will not waste one ounce of your energy worrying about anyone except yourself and your own diagnosis and treatment, if necessary. I pray that all will be fine for you, most times it is, but however this unfolds, it's time to take care of you 100%.
Hugs