Mind starting to race (A** again)

It’s been over a month of pushing thoughts about a terrible neurological disease out of my mind and I’ve been doing well until now. I went to the chiropractor and told him I felt tight behind my right knee and upper calf. He had me push against his arm with my leg and I felt a pull and pain in my upper hamstring right below my butt. He said my hamstring is really tight and I probably strained it pretty good. This should be end of story but now my mind is racing thinking it’s strained cause my other muscles are weakening and deteriorating due to the three letter word and it put extra strain on my hamstring and that’s why I pulled it! I’ve had the feeling for a few weeks it should have healed? I’m kind of freaking out in my mind.

Thanks everyone for the reassurance and replies! Sorry I tend to float in and out, I’ve been trying to not even see the words or anything about it to keep it out of my mind. However now I didn’t even try to notice but when I flex my leg straight the muscles seem to hold for an extra couple seconds or so and then release and relax. Also my big toe seems to point up farther leaving the other toes lower when I try to lift them all up and my foot is like vibrating. When I lift my four non big toes up and relax they also stay elevated for a few seconds. Like are my reflexes messed up? It’s so hard to ignore when your mind ain’t right and it just finds theses things out of nowhere. I’m trying my best to keep calm. Once again apologies for just floating around, I’m really trying my best to take everyone’s advice and reassurances.

You’re absolutely right! Thanks so much for the quick response. This forum has helped get me through the last couple months. After the breakdown, its been back and forth but I truly appreciate every single response!