Is there a chance i could be pregnant?

So i have been actively TTC for 4 months now. Well this month i had some symptoms so i was hopeful until i got my period 2 days early. Usually my periods last 5-7 days and are extremely painful. This one only last 3 days and there was absolutely no cramping. Plus my flow was light compare to usual. Now this morning i have been constipated and i threw up! Is there a chance i could be pregnant?