Still no period no stress best i felt in my whole life

Feb 16 to 18 glow it say if i dont come on 18 im pregnant they say cross my fingers an toes i dont come on well im not on no cramping no none as usual been sick throwing up tired cant sleep eat get nausea pt neg on 16 44 as of feb 17 it took ten test before positive w my 10 yr old son fingers cross but not stressing end on month ill test or go to dr came on twice in January 1-5 24-29 period always been regular from my days app