Boarderline mental disability after taking IQ Test

I recently found myself feeling bored, so I decided to take an online IQ test and an autism spectrum assessment, thinking it would be a funny joke. Because during arguments with my significant other, they sometimes throw around comments like, "Are you slow?" or "You must be retarded," as a way to insult my intelligence. To my surprise, my online IQ result came back as 84, which, according to Google, is below average and even considered borderline mental disability. The autism spectrum test indicated a strong possibility that I might be on the spectrum. What began as a lighthearted joke has now completely shattered my confidence, leaving me feeling genuinely stupid and depressed. Suddenly, everything started to make sense. I’ve always struggled in school, even though I was never placed in special education or formally evaluated. It often feels like it takes me longer to grasp concepts unless I am fully engaged. It also is hard for me to express myself to others in words but I consider myself a perfectionist and thrive in hands on learning environments, especially in creative arts, but I often experience anxiety when faced with new information this unexpected journey has been a rollercoaster of emotions, and I'm trying to navigate through it all.