Pregnant?

I'm engaged to a Marine. I went and spent 4 days with him which yes included lots of sex. It was unprotected.. but with pull out method which I know doesn't always work. We knew pregnancy was a chance. It has now been over a week since i was there. And my period is 4 days late. I was suppose to start my period 2 days after I came home. I've been sleeping A LOT and my breasts are tender, my vaginal discharge is white and creamy, and my lower abdomen feels bloated or just kinda like full. I took a test this last Wed the day before my period was suppose to start and it was negative which I can understand it was to early... but I'm nervous to take a test and it come out negative again. I'll feel like I'm just crazy...