Omfg same. Same. Its like i wrote it. Just get a brqin scan once a year and you can detect it.
I'd worry less about an aneurysm and more about axiety. You have no symptoms and no family history and no risk factors. The thing you should really be addressing is being a 21 yr old who is obsessing over conditions he/she doesn't have. Get the anxiety addressed or you'll waste time, ruin relationships and make yourself sick over irrational fears and worry.