It's tough to say whether or not your symptoms are due to pregnancy, psychological, or simply PMS.

With my 2 pregnancies, I knew almost immediately that I was pregnant. Especially the second. I recognized the symptoms when I was just a couple of weeks along ~ before I could take any tests. I just knew it. So, it is possible to have symptoms very early in pregnancy. See your GYN to be certain of the facts.

Best wishes to you...