How Effective Is Birth Control If He Cums Inside You?
Birth control is, statistically speaking, 95% effective if he cums inside — as long as the method is applied correctly each and every time you have sex.
According to the study we referenced above, 61% of women who relied on condoms said they were not used during every instance of intercourse (or one was put over the penis “late” into the activity).
Additionally, 38% of women said they’d missed at least one birth control pill over a three-month period — which can and does affect the method’s efficacy.
As we mentioned earlier, when contraceptives were used correctly, their failure rate is only 5% overall (but varies considerably by method, more below).
Birth control can prevent pregnancy even if your partner cums inside you although the effectiveness ultimately depends on the exact method(s) you’re using and whether it is being used consistently and correctly.