But it doesnt have any type of odor to it & since it was basically my 1st time and my body is new at thiss(sex), DO you guys think it could just be my body going through som changes or something like that ?
you could have an infection go to the clinic and get tested good luck.
Yellow discharge is considered abnormal. I would see a doctor. You probably have some sort of bacterial infection like BV. Which is not only caused from sex so if you don't wanna tell your parents about that, don't worry.
If it has an odor to it you need to go to the doctor . And since your period is late you may want to take a test. But if it has no odor then it is probably nothing but I think you should take a test. Good luck