Pregnancy dreams

So I think I Am pregnAnt but not sure yet, my last AF was so light and wasn't normal for me at all, it last about 5 days though! Now it is about 5 days after my "AF" and I'm experiencing back pain, headaches, nausea, and sweats... Not sure if I am pregnant or not taking a test In the morning but I am not sure... Has anyone else had the Same Thing happen to them??? Help first time for me on this ...