 [ Symptoms ] missed periods months at a time so for the past two summers i have missed my periods in 2012 i had three periods before july nothing in june through december my doctor gave me medication to make me have a period which i did not take because i had a period before i started taking them in 2013 i had four periods but then missed july through now  november 2013 i had my first period at 14 and now i am 17 i also have type 1 diabetes and have had always had irregular periods but now i have lower stomach discomfort [ Disease ] yes there are no feathers in the flu vaccine vaccines are made using eggs as incubators but eggs and feathers    even if they are from the same bird    are two totally different allergic sensitivities you can take the flu vaccine safely