ok....i always thought that it was possible....but unlikely that a girl would get pregnant on her period... especially if a condom was used and she was on the pill...my boyfriend thought that it would be more likely when a girl was on her period than when shes not.....is it less likely or morelikely that one will get pregnant while un there period? and another question is, how likely is it that i would get pregnant on my period, while on the pill with a condom?