6 DAYS LATE... HELP!!

JustLove

So, I am 6 days late and I've taken 3 pregnancy tests and they all had the same result, negative. I have no symptoms other than a sinus infection that just started yesterday. I am afraid to take anything because I might be pregnant. I have a Doctor's appointment tomorrow, will they be able to tell if I am pregnant? Don't they have the same type of pregnancy test that we can take at home? Please help!!