pregnant on the micgoryon pill 30

im on the micgoryon pill 30 i always take them at different times so this stops them from being as effected i heard,i normally come on my period on the tuesday or wednesday and last for 5-7 maybe 8 days maybe however this month ive only lasted 4 days and its been a lot lighter than normal, me and boyfriend did have unprotected sex that month aswell i have also been expereincing these symptoms headaches, smoking is making me feel sick, ive been wanting to throw up however im not im just heaving, and really bad cramps in my belly/side and also like a wierd feeling in my belly its really hard to explain, also someone pointed out to me that im weeing alot more than usual, and ive been alot more tierd than usual the other night i had 14 hours sleep and woke up still tierd? i duno if i am or if its me being parnoid please someone help thank youu