Coffee and Caffeine FAQ

hi
i am 15 years old and recently had a caffeine overdose, this was due to drinking way to much coffee because i was tired, so instead of rest i was drinking aloto coffee.
i started to drink it about 6 weeks ago also added to the mix was 1-2 cans of engrey drink every thursday, when i went shopping
Its been about 6 days since i took the overdose and now i am withdrwaing from caffeine.
i have mild headaches, find it hard to conceerntate, i am very tired, and i cant be bothered to do much, i fell diffrent, find it hard to get to sleep.
this is really scaring me and i now fell depressed.
Is this normal, after a caffeine overdose then withdrwal ?
Are the fellings tempoary or permant ?
another thing during the withdrwal can you eat food with caffeine or just beverages ?
i appreciate you reading this and please can you reply
many thanks
jc