Thank you. The first day of my last period was 6/18 - so I should start on 7/16. I can't tell if I'm just PMSing or having pregnancy symptoms.

Easy way to tell. If you think you might be pregnant check then check a home pregnancy test. They are cheap, reliable and available at any pharmacy. If your current symptoms are caused by pregnant then that means your hormonal levels would be high enough for detection on a test.