By all means ignore other peoples personal experience.
If there are hundreds of such stories, and they are not blessed by an “actual scientist”, then they are not true, right?
(Pinging the only “actual scientist” I know for his 2¢ worth)
Your experience defies science. If you believe everything you read, you'd believe aspartame causes brain cancer, multiple sclerosis, lupus, memory loss, fibromyalgia, and so on, because people claim they "experienced" these diseases due to aspartame.
Aspartame doesn't cause any of those afflictions, even though there are thousands upon thousands who believe otherwise, and there is a simple example involving foods you eat regularly that makes that fact clear. I offered you a couple of such examples, but it's hard to reach someone with a fixed mentality.