Hi my period is nearly two weeks late i did two pregnancy tests at about 7-10 days late and they were both negative what should i do now?

Mark it on calendar: There is nothing you need to do right away. Keep recording your periods on the calendar. It is common to miss a period every once in a while. If you are really worried you could ask your doctor to order a blood pregnancy test. Personally I would wait and see what happens next month. If the irregularity becomes a consistent thing, then you will need a work up.