The deadline for easily changing a grade has now passed. It’s still possible to change a grade in the case of an error, mind you, but there has to be a very good reason.
You can still inquire as to how you received the grade you got, but it is extremely unlikely that your grade will be changed from now on unless there’s a very good reason.
(Like, for example, a family member dying on exam day. Or your being kidnapped by aliens and having traveled to Mars and back, and only now escaping, with some Mars rocks to prove you were really there. Or… well, you get my point.)
If you think a mistake has been made, don’t hesitate. I’m just saying: it’s unlikely I can do much for you at this point… it’s out of my hands.
Have a wonderful summer, and see you in the fall!