PLEASE give reassurance!

I know I'm crazy! 
I am on the combo pill, I take it every single day within 30 mins of my time frame. My boyfriend also pulls out, but there has been maybe 2 or 3 times in the past 5 months where he accidentally pulled out .5 seconds too late, though im fairly sure nothing got inside me, and if it did it was a teensy bit. But again- I take BC every single day no missing days.
I usually have very irregular periods, but since starting this new BC 5 months ago they've all came besides last month it was extremely light and lasted one day (like it used to always do before this BC) and I'm scared it's not going to come at all this month and be irregular again! 
I have no pregnancy symptoms, besides vivid dreams and bloating which i always have. I also just got over a yeast infection if that counts for anything? 
I've also been having some extreme stress from school for the past week. 
I'm going crazy right? Tell me I'm fine!