HELP!

B
I'll try and keep this short and simple:
According to the app I am 17 days late (my period was supposed to come on 6/15). I did not have unprotected sex, my partner and I always use condoms. I am not on any type of birth control. I took a pregnancy test on 6/20 and 6/23 and both came out negative. I've been spotting lightly and the color of it is dark brown to dark red, but no period has come as of today 7/1. I went to planned parenthood 6/29 and they also took a urine sample test that came out negative. 
I can't really talk to my family about this, so any advice would be greatly appreciated.