This is a very interesting scenario you bring up.
Anna and Bob agree to have sex. Anna would prefer without a condom, Bob insists they must have a condom. Anna sabotages the condom by poking a pin through the package. They have consensual sex with the condom, which unbeknownst to Bob has a hole placed there by Anna. Anna becomes pregnant. Is it an absolute unquestionable legal fact that Anna raped Bob? Should Anna be arrested? If Anna leaves the country, should she be extradited to face justice?
And does this only matter for a particular kind of birth control? Anna tells Bob she is on the pill but she is not. Bob consents only on the condition that Anna is on the pill. They have sex. Is it an absolute unquestionable legal fact that Anna raped Bob? Should Anna be arrested?
What about sex conditions not related to birth control? Bob agrees to sex with Anna only on the condition he be allowed to wear his warm wool socks to bed. During sex, Anna finds the socks to be scratchy and pulls them off. Is it an absolute unquestionable legal fact that Anna raped Bob? Should Anna be arrested?