Need advice plz help!

TTC #1 I have sore boobs for a week, period cramps for a week with no period , blue veins on boobs for 2 days , I'm late on my period 6 days. Took a test this morning and it was negative. Can I Still be pregnant and my hcg levels are not high enough? Or would it show by now BTW I took a equate Walmart Brand blue dye test