Can multiple ejaculations decrease the effect hormonal birth control?

ex. have sex multiple times surrounded by a dark.
Answers:

No. Hormonal birth control have nought to do near the man's semen. It prevents you from ovulating. So whether you hold sex once a darkness or 5 times a hours of darkness, you are still protected one and the same amount by hormonal birth control.

What's the logic aft a woman wanting breast implant to blow up them?

When Should I Start Taking My Birth Control?

Does anyone know the grounds of a missed term and standard lamp spotting, besides pregnancy?

Um, why would it do that? If you are chitchat the pill or ring or something resembling that, consequently, no.