HELP! I Need Opinions

Hi ladies! I need some input please. I am four days late on my cycle (2/1/17) was the last one lasted 6 days. No period at all I have very sore breasts and yesterday I started cramping really bad like I was on my cycle and still I am off and on all day but like I said no actual flow. I took a test yesterday but it said negative. Next week I will go to my gyno if neither show up.