What where you're first symptoms of pregnancy

Recently I took a pregnancy test, it was negative, but there's still a bunch of weird things happening. Such as my lower abdomen feeling heavy, and cramping on one side of my lower abdomen, heartburn, feeling like I need to throw up, I'm tired constantly, and craving. Now I've already skipped a month in my cycle. When I get home, In a month or two I'm taking another test. Anyway what where your guys first symptoms?