My last period was in the 26th but started new bc on the 21st has unprotected sex before that.trying to figure out if i am pregnant or if it is the bc.abdominal cramping, nauseous at different points during the day. back ache tender breasts 2 neg tes?

Hard to guess: It can be hard to tell if a woman is pregnant because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. A woman who gets her normal regular period is NOT pregnant. If newly pregnant, the symptoms don't start until more than 10 days after conception. A home urine pregnancy test gives a very reliable result by 3 weeks after sex, or 1 week after missing a period.