So Frustrated!! Any advise??

Julie
AF was due today. Sunday I had some brown discharge when I wiped. Nothing on the panty liner ever, just when I wiped. Monday looked like AF had come early. I bled Monday and Tuesday...but pretty light as far as what my "normal" is. Yesterday I wore the same pad all day and there was some spotting. Today, nothing so far. My periods ALWAYS last 7 days. I've been nauseous after every meal. Do you think I could still be pregnant? Even though I had my "period?" Is my body just off because I've only been off BC for a few months? I'm afraid to test...just really don't want to be let down.