Can i still go into Anesthesiology? Will my first couple year of college prepare me better in these subjects?

Honestly, no one learns anything in HS. When you get to college you'll have to take the intro courses before the in-depth courses, use them as refreshers and go to as many study groups as you can if you cant grasp the material. Obviously you do know what a proton is. After the intro courses, if you STILL feel uncomfortable with the material, then you can re-evaluate your major. Honestly, after you're in the anesthesiology program and you've graduated and know what you're doing and what doses to give what people, what you learned wont really matter because its all memorization at that point.