Started a water fast and ended it due to scary stories

Hi! yesterday I started my water fast, I was planning to do it as long as I could as this was my first one, about 28 days maximum. 7 minimum. I had so much willpower and went without eating for around 17/18 hours but then my sister told me how you can lose hair and teeth will fall out due to lack of vitamins, I then came across someone elses post about their tooth falling out and in general came across so many articles and forum posts about how it's extremely bad for you.
I'm a 20 year old male, 5'8" and 200lbs, I did my research on how I can keep weight off etc so I was prepared, but I just got scared and I ate 2 cherries when I wasn't even hungry, I thought should I even continue it now or have I ruined it. Eventually I came to the conclusion that I ruined it so I ate a mini donut, some buttered bread and a chocolate milkshake, my teeth aren't in the best condition anyway but they're not in the worst either, I'm just scared that if I do this I will ruin my metabolism, teeth, hair etc. I REALLY want to do this though and I have all the willpower in the world, I KNOW i could do it I'm just scared to... plus my birthday is on the 25th July so It's probably best not to right? until that's done with due to the temptations, people questioning why I'm just drinking water and not eating etc. So if I am to do this, would you recommend it?