Pregnant or not pregnant?

Stephanie • Aug 12, 2008💑 Dec 21, 2015💍 Sept 04, 2016 Hayden Alberta Marie👶🏼💖 Baby #2 due February 25, 2019
I'm 11 days late for my period and I've spotted about 4 days ago and today I'm spotting again. I've taken to pregnancy test both were negative but one had the negative symbol but in the other little oval box there was no line like there was on the first one I took. I'm also thinking about going to the walk in clinic to get blood taken to see if I'm pregnant. Thoughts?