The use of progesterone, especially in pea size minute dose that is well below physiological dose, is for a specific reason at this time. Hair loss is not common, especially in this low dose, but given your body's unexpected events due to external issues and ensuing sensitivity, it is not unusual. I have reviewed your situation in order to find out more info as what you presented is incomplete. Unfortunately, the missing pieces contain personal information about you, so I will not go into details in a public forum. Do not be alarmed. Dorine will explain to you next time.