I have a question.

My older baby used to put her head between her legs and look from there when I was pregnant with this baby. She stopped doing that soon after I gave birth. There is an old tale that says when a baby does this someone in the family is pregnant. Well she just started doing this again today, i had a bloody nose the other day (just before I got sick and I usually only get them when I'm pregnant) and today i had heartburn. The thing is I have the implanon, and although my fertility is super high, I made sure to be safe for the first 4 weeks after i put it(even though the doctor said 2 weeks was good enough). I am super scared of being pregnant, can you please reassure me until i can buy a test tomorrow morning? i know it sound silly lol Thanks