I was 4 days late on my period but I did start my period. But its lighter than usually and its always regular and heavy at first. I had unprotected sex with my fiancé and let him come in me about 3 weeks or so ago. Ive had two kids already so I know what being pregnant feels like. I feel like I'm pregnant. I took 5 home pregnancy tests already. The first two were negative. The third one was positive. I took that one when I was 3 days late. Then the last two said negative. But I've been throwing up only when I eat pizza or hot dogs. But I'm not sick I feel fine otherwise. And I've had mild cramps, my boobs have been tender and hurt from time to time, I'm really tired more than usual, im peeing a lot more, and eatting dairy and sweets like crazy which I never do. My stomach is a little more pushed out than normal and its all in my uterus. And its hard. But because I'm bleeding and I had 4 negative tests and one positive test I'm so confused. I really think I'm pregnant. Any thoughts?

It would be too early in the pregnancy for your stomach to be "pushed out" if you are pregnant.

Since you got your period, most likely you are not pregnant. You will need to wait to see if your next period comes when it is due. If not, test again using first morning urine.