I'm confused. Worry about anything?

I'm twelve and recently I've been going through some serious anxiety. I've been on vacation and everyday I would sleep 1-2 am in the morning. One day, my throat started hurting and I saw that I had tonsil stones. I went to the doctor and he gave me antibiotics, two weeks have passed but only the pain has gone the stones are still there. I've also been getting more sleep now but when I get home I immediately get really tired. One time I almost felt like passing out. Since I started taking the medicine I've been feeling tired and my eyes are blurry sometimes. Sometimes I search up these things on the internet and I get extremely anxious. I even started thinking I have Leptospirosis from drinking from those cans. I just wanna know if I should worry about anything?