Hey so I've just stared talking the pill. But it been a on and off thing cause i would forget. I…

Hey so I've just stared talking the pill. But it been a on and off thing cause i would forget. I just got my period which is weird cause i don't get it till the end of the month and I've been feeling like crap nauseous in middle of night or eating food or just driving mild cramps bleeding but not heavy at all I have to use tampon but I change it out like twice a day and my boobs hurt when there grabbed dizzy tried is it possible am pregnant or just having my period? help!!!