A Brief Comparison of the Pills
There are actually many types of this pill available for you to choose from. The POP or Progestin-only pills have no estrogen. This is usually called the mini-pill. It primarily works to thicken the cervical mucus so that the sperm won't be able to enter the uterus. This kind must be taken consistently at a certain time everyday to achieve great results.
Combination pills, meanwhile, are those that have estrogen and progestin. The many kinds under this type are said to prevent women from having ovarian cancer as well as endometrial cancer.
The third most popular are the ECPs or emergency contraceptive pills. This must be taken after 120 hours of committing unprotected sex. The drug will prevent you from impregnating as the cause of the act. This shouldn't be taken regularly though. It is only when needed that one should subject herself to this type of pill.
The important thing to remember when choosing the type of pill that will suit your body is to consult your doctor about it. They know about what will work best for you in terms of this condition because they have scientific knowledge about the field.
This is just a brief comparison of birth control pills. There are a lot more available in the market. And for sure, a lot more will be discovered and developed as time passes by.