No appetite

I go to the doctor tomorrow. Wondering in my mind if I'm pregnant. Haven't said anything to my husband because I don't want him excited for nothing. However these past couple weeks I haven't really had an appetite. I fill full all the time. Been light headed and just extra tired. Cycle just a couple days late. I pray I'm pregnant but every time it seems that I am and I take a test I'm not. This is irritating but I'm expecting a miracle.