PERIODS 4 DAYS LATE, CRAMPING, NEGATIVE TESTS!!! HELP!?

Info: started period june 1st, started BC june 5th, had the 15th thru the 21st with husband, very very unprotected. Never pulled out. Stopped BC the 21st, its now july 22nd & I'm late. For the past few weeks I've been cramping, getting weird twinges, pains and sore , feeling sick, upset stomach, and headaches, etc. I've been pregnant before I have a baby girl. My hubby is deployed the 15th thru the 21st of june were the last times we had latly. All my hpts are still saying negative. I just have a feeling somethings off cause I am very ver regular despite birth control or stress. I've only been late once in my life & that's when I was pregnant with my daughter.