Im afraid I might have something more serious

I, I am a 17 male , it's been 5 days since i started twitching in my calves and tighs(mainly in my calves, also in both legs). Eventually my right feet/toes started feeling a bit "funny"(Not twitching necessarily but feeling weightless). 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 especially when doing certain motions/poses. 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. Please feel free to ask or chat about anything.