oooh well I can relate
I came from a family born in wealth, most didn't even go to college(especially the last generation). I've been told to get good grades so I can go to college since no one in the family hasn't in awhile so it's sorta like a pressure(at first). You kinda sound like one of those kids in my AP classes who preaches about wanting to go to Harvard but you need a solid 4.04 Gpa and you need to score a perfect 2400 on your SAT(800 in math, reading, and biology).
My Gpa was a solid 4.0 but now it's like a 3.4-3.5. This isn't constant, just for the first marking period and I swear that's like a huge disappointment. The thing is you're not perfect and neither am I. It seems like you're being pressured to do something you don't even want to do, even if you do want to be a doctor you must gain a better stamina to have a better performance and even mindset.