Is this fungal canker?
This is our (fruiting variety) cherry tree that is reportedly at least 13 years old (husband bought the house 7ish years ago). This morning, I accidentally stuck my fingers in the pictured large glob of gelatinous sap on one of the 3 main branches of the tree. That led me to look closer at the tree & discover more gooey spots, & numerous dried spots that may be normal sap, I'm not sure. There are sappy spots on 2 of the main branches themselves, & at least a few smaller branches. Leaves are still green. Lower trunk unaffected.
I'm in central Iowa, lately it has been very hot, very rainy, & always humid. It's in heavy clay soil. We don't water, we haven't fertilized or chemically treated in any way, & the late frost killed off the fruit this year.
In picture 1, the small scrapes - 1 showing dark wood on the left, 1 showing light on the right - are fresh & done by me, as the internet led me to believe looking for that darkening may help determine what's causing the "gummosis." Literally all my knowledge on this comes from a bunch of googling tonight.
I am more than happy to answer any questions, take/share more pictures, whatever helps. I've also already googled a plan of action if it IS fungal canker, & I'm happy to share that for approval/tweaking if y'all think that's the culprit.