i had unprotected sex the day before my period and the day i started my period. we used the "pullout" method and he says nothing got in me. this was a little over a week ago. anyways, i got my period of course because i was already on it but it didn't seem normal to me. it was lighter, maybe only a little heavy once and then it stopped. now i am experiencing a brownish pinkish like liquid coming out but only when i wipe. my areolas seems to be a little darker and i am having heat flashes and have felt something like morning sickness once. my appetite has completely decreased and i have to force myself to eat. this is the first time i could be pregnant. what are my chance of pregnancy?