If you are TTC and late for your period and having these symptoms, I think there is a good chance you are pregnant sweetie. If so, congrats!!
I knew before I ever missed a period with both my children for some reason. I actually did a pregnancy test before my periods were due because I just kind of "knew" I was pregnant.
My first symptoms were nausea due to smells. I would almost vomit when I smelled red meat cooking, and at that time, I LOVED red meat. My breasts were also very sensitive, but I didn't have any other of the classic symptoms.
I'd say go and get and EPT. They seem to be pretty accurate- it gave me a positive both times before I'd missed a period. Good luck, and let us know what the outcome is!!