Crown lengthening: nervous, scared, periodontist thinks I’m fine? How long is healing? Can teeth just fall out? (Photos)

had crown lengthening, I am not liking how slow I’m healing. What’s bothering me the most is that I feel like one of my teeth besides the crown lengthened tooth is loose. had my surgery on Weds saw perio on Fri to check & he said that my tooth isn’t loose. going nuts here. friend told me she had the same problem &sensitivity for a month. I don’t have perfect teeth but I only have 24 teeth can not afford to lose one. I really want this to be ovr with. Feel free to tell me I’m overthinking