You can go on birth control when you have herpes.
things could go wrong with it and u could get pregnant
Nothing
If the birth control fully works, there won't BE a fetus, birth control will do nothing about an impregnated egg or the baby that it will result in.
Birth control loses all of its effect the day that you stop using it.
You can get pregnant
There is no increased risk of pregnancy if you miss the non-active birth control pills.
Yes. In the first few months of being on birth control, this happens frequently, and it fades as you continue to use it.
Nothing
Sperm is not affected by hormonal birth control; it does the same thing it does if you're not on birth control, except that there's some decrease in how much sperm can get into the uterus (due to thickening of the cervical mucus). Hormonal birth control affects the egg.
You get a withdrawal period AFTER you go off birth control.
No, the opposite happens you will ovulate.