Pregnant ?

I had protected sex with my boyfriend last week. We are both 16 and used a condom and birth control. I'm a day late on my period and idk what to do. I'm never late. I can't tell if Im gonna get my period or not. I had the white milky discharge last week. But rn I'm either super dry or still have some clumpy white discharge. Is that good or bad? 
Please help idk what to do 
Could being super stress delay it this much?