Pregnant, not pregnant? Help

I had just ended my period about a week and a half ago It was ALOT heavier then usual the past couple days i have been feeling reallly sick very light headed and very nauseous. Last night i noticed a little bit of bleeding and this morning i had alot of clots which isnt normal for me. They way im feeling just doesnt feel right i feel like there is something wrong... Anyone gone through this i just need help doctors office is closed and i dont wanna go to the e.r for something that isn't necessary