Pregnant maybe ?

I'm about 8 dpo Iv had quite a few signs that I may be pregnant possibly. (Mild cramps, tired all the time, heart burn for 2 days straight, pelvic area has a few sharp pains, gas and alotttt of it & I just feel different) Last night I had a dream that we were at our first ultrasound.. Could this mean anything? Don't want to get excited for nothing.