My period is late for 2 weeks now. Tested 3 times all negative. I have back pain, bloated, pressure in the abdominal area, light headache and light dizziness, no breast changes, usual bathroom breaks. Just wondering to get blood test. My period is irregular either -/+ 4 days when I start. Never been this late. I had period twice last month 7/3 then 7/21 which lasted 5 days each and I wonder if that was the cause. Not taking any BC.