Could you be pregnant if your period is 4 days late and you have taken 2 pregnancy tests and they were both negative and is it too early to tell?

You can't rely 100% on pregnancy tests and it's best to be examined by a physician. It's highly unlikely you are pregnant. It is true that even when you first conceive some women can have a period or two. Stress or having sex more often than usual can certainly put off your periods from their regular schedule. Since you are asking this question you are either trying to get pregnant (don't try so hard and try relaxing more) or, you're risking getting pregnant when you don't want to be. If you are doing the latter it's time for you to use some method of Birth Control. If you are trying to get pregnant then thinking about it all the time and pushing yourself too hard to get pregnant can be more of a hinderence than if you relaxed, had some fun and got your mind off getting pregnant. Good luck either way Marcy