35 days caffeine free withdrawal weaknes muscle?

Hello, I've been caffeine-free for 35 days and I feel that my muscles are weak, I often don't have the strength to get out of bed and I don't have the strength to do strength training and cardio, my legs are also weaker? Before I quit caffeine, I couldn't train for long hours. Is this a normal side effect of quitting caffeine? should I go to the doctor? I will add that I am 23 years old and I have been using caffeine for over 10 years since I was a small child