Help?

Sable • Hi.. Uh.
I took many tests, a lot of them I took wrong so they didn't read but ultimately I got one positive result first then a negative after that. I'm having apparent signs of pregnancy, like I can't get enough sleep, I can't stop eating/feeing nauseated, cramping and some pale pink discharge. Today I'm doing better on the fatigue (thank goodness!) but I have my appointment tomorrow to see if I actually am pregnant or not. 
I had some light spotting and cramping for less than 24 hours when my period was supposed to come and I had unprotected sex about two to three weeks prior to that. I guess I just need some advice. This is my first time dealing with a possibly pregnancy that came up positive.