Im stressing out

Im a sophomore taking no APS, but doing very well in the classes I have except for chemistry, with a B.(The only solid AP offered for my grade is chemistry, as you can see I am not excellent at it) I am taking a lot of APs next year, and I have a predicted GPA of about 3.87 unweighted. I have great ECS, but I am already feeling discouraged and overwhelmed. Keep in mind that I am in no way look for Ivy leagues, maybe a few liberal arts colleges? Not sure what my chances are at that level of school at all.