Just found out I’ve had a silent mini stroke (TIA). Had this?

After a fall, my doctor ordered a CT scan, and an “incidental” find was a silent mini stroke (not TIA) in a small vessel. Age indeterminate, so not sure how long I’ve had it.
I’m scheduled for Carotid artery Doppler, and a coronary artery CT. Doctor put me on .81 aspirin, and awaiting results of scans.
I’m quite concerned that this increases my risk for a large stroke, or more mini strokes. I’ve changed my diet, losing weight, getting cholesterol down (which wasn’t overly high) and watching BP, (which is normal). I’m 73 and otherwise in good health…. I thought!
Have you had similar findings? What have you experienced?
Thank you. I love our Mayo Clinic group.