Condom malfunction a week into starting birth control. Spotted during placebo pills. And spotted in between cycle on second month of BC? Pregnant?

Can do a preg. test. Maybe not pregnant, but one can do a pregnancy test to be sure. A urine pregnancy test done correctly gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened). If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and therefore lead to a repeat test.