What affect does birth control have?

there are many forms of birth control , I'm currently on microgynon which is a pill for helping my periods work and stopping me getting pregnant. but like i said are many.

birth control is to allow periods to flow freely without pain or side effects such as vomiting. i use microgynon for less pin, lighter flowing and less cramps.

birth control in all, depending on if you want children or not do many things.

i would recommend talking to a doctor about them