11 days late/ 4 days negative

Kyan

Hello ladies I’m 11 days late and have no feeling my period is arriving soon... I’m suffering from crazy insomnia, currently sleeping from 6am till 3pm (1 week so far) my breast are tender. At 4 days late I took a test and was negative. 6 days late I had the worst Lower back pain that lasted a day .. im so confused what could this be