no you probably aren't pregnant if you read the directions on your bc pack it tells you there could be some cramping for a few months until your body gets used to it and your period may be a little off at first to. but if you want to be sure wait another 2 weeks until your next period is due if it doesn't come take a test if it does your in the clear
everybody pregnancy is different. With my fist baby I didn't start having signs of pregnancy till I was 10 weeks along, and it was just nausia. with my second baby I found out that I was pregnany 2 weeks in the pregnancy (which is not supposed to be possible) because of weight gain. I would wait till you have other symtoms, like weight gain, peeing alot, engorged breast, nausia, vomiting, fatuige, or missed period. It is unusual to have symptoms so early on. I would wait untill you have a missed period, and then take a home pregnancy test.