Well i had sex the two weeks before my period in august. this lasted six days like usual ten a few days later i started getting brown discharge that lasted a few days. this is not typical for me. now, (september) my period started 10 days early. I've had sex before this period started. I'm supposed to take the mini pill but keep messing up. I've had sore heads, dizzyness, backache, tiredness and feeling sick. am I pregnant even though i had periods?