Could I be pregnanat?!?

So I had dark bleeding last month and the last 3-4 weeks I've been nauseas off and on more sleepy and seems like I am going to the bathroom more than normal. I normally have sore brest, some nausea and cramping two weeks before my period but I didn't really have that like I normally do it feels off and then out of no where two days ago my boobs got really sore I have gotten way more sleepy and I'm not sure what to do..or think my period is expected to come tomorrow...