Im Afraid I might have something serious

I, im a 17 male , it's been 4 days since i started twitching on my calves and tighs(both sides). Eventually my right feet/toes started feeling a bit "funny"(Not twitching necessarily but feeling weightless or something). To worsen my anxiety last night my right calf felt kinda tired when I was trying to sleep. I also feel like my calves and tighs feel harder than normal. Fortunately I can still jump, walk, walk on my tippy toes etc. Nevertheless this is getting frustrating and scary I just can't stop thinking about this im so afraid I might have something serious like ***. I just want this to stop.