Should I test?

Heather • Wife 3/28/15. Mother of 4 furbabies. TTC #1
I ordered those cheap hcg test trips through a co-op online. Anyway, been using those. Negative everyday. Glow originally had my AF at 6/6, but now changed to 6/9. Should I test with the one first response test I have or wait? Sore breasts, cramping but not constant, pressure/pain in lower abdomen, hot at night(unusual), etc.