Dumb question i have

I have a dumb question. I’m going to the doctor this week with my mom. I’m 18. I will ask for a blood test just to see if I’m healthy. But also because I’m 19 days late on my period. I’ve Been on BC for 3 months and last month I took a plan b because I was on medication. The pharmacist said just to take EC just to be safe. Will the blood test show that I’m on BC and that I took Plan B? Or no? Cause I’m pretty sure my mom will read the papers lol and she doesn’t know!!