Is it all in my head??

Hi Ladies! So I'm a freshy at TCC and it's my 2nd month trying with my husband. We did the monkey dance on Friday 13th and I started to ovulate on the 16th or 17th. I had some light cramps and felt a bit bloated.  
Today is the 19th and I have been feeling dizzy, light headed since yesterday. I have lost my appetite and also feel a bit bloated. Can this be an early sign of pregnancy? Is it possible that I want to be pregnant so bad that I am imagining things? Arghhhh! Would love to hear your thoughts! Thank you and big love you all!