Is there a chance?

I'm afraid they are false positives. AF isn't supposed to be here until Monday but I took 3 different tests in the afternoon that came out faint positive. Took one this morning and it was negative. I have a doctors appt on Tuesday but in afraid he's going to tell me no. I've been very tired, nauseous and my boobs are killing me. Even certain smells make me want to puke lately. What do you guys think? Maybe I just have lone eyes cuz I want this so much. Also red dye tests have never worked for me. Only the blue ones do.