Well, might as well have a doctor chime in...
DD, you may have indeed burst a small aneurysm somewhere in your cranial macaroni, esp. given the symptoms that you had that seemed like it was a stroke. If they found more of those aneurysms (usually called "berry" aneurysms), those are ones to keep an eye on (so to speak) to ensure that they don't get bigger over time. There's nothing you can do about those being there, as those are there due to genetics and how you physically developed. Other than controlling your blood pressure and smoking cessation (which helps for those who have vascular disease), you'll have to see what the Neurology folks have to say when you meet with them.
The truth is that most of us probably have one or more of those in our heads somewhere...but it all depends on where they are and how susceptible they are to burst which decides how much of an issue they become.
Keep your chin up, chilehead!! Take care!
- Joe