I have a three month old and my hair has just started to fall out. I started taking Kariva about 3 weeks ago. I am not sure if my hair loss is due to the hormone changes from giving birth, or if it is from the birth control pill. If it is the birth control then I will discontinue to take it.

Postpartum hair loss is quite common and it does usually occur about 3 months after delivery. The shedding could last 6-9 months. When shedding ceases the new mom should be left with hair only slightly thinner than her pre-pregnancy hair. Unfortunately for some the hair loss becomes more severe and long-lasting. The postpartum period requires additional nutritional support and nurturing which many women do not get as they are too busy tending to new baby and other responsibilities so they tend to ignore their own needs. The article linked below can help you to understand postpartum hair loss and how to lessen the effects.
Kariva and other oral contraceptives cause hair loss for many women. There is no way to know how it will affect the individual until it’s in the system for 1-2 months. During pregnancy, delivery and postpartum period the hormones go through a lot of different changes which the body must adjust to. The hormones may still be trying to get back into balance. Adding birth control creates another hormonal change that the body must adjust to.
For some women birth control corrects a hair loss problem. For others it creates a hair loss problem. And for many it has no effect at all on hair growth.
It is very likely that you hair loss is normal postpartum hair loss but you may want to research Kariva for its side effects including hair loss.