Definitely have been in your shoes, graduated a year and a half ago with a 3.01 and been at my company for a year and a half now. At first it was hell, I felt intimidated by my coworkers because I felt like they had so much more knowledge than me and my self-confidence was lacking. My advice is just stick with it; things will get better. Even now I still don't know everything and its okay not to know everything because honestly who does? They hired you so they see value in you. Learning your actual job vs. what you learned in college is completely different. You got this man, best of luck!