Hoping to be pregnant ?

I was nauseas for about 5 days straight, then haven't been since. Weird feelings in my lower abdomen for a couple days, nothing since. My breasts haven't been sore but they look larger. ?? My period isn't due till 13th & I had these symptoms a week and a half after sex. Are pregnancy symptoms constant? Or can they stop and show up every now & again? I'm really hoping to be pregnant. But, I'm trying not to get myself excited for nothing. Just want the truth, even if it hurts :)