OK so I am 21 years old and I have not had my period for a year now... I gave birth 19 months ago and right after I started having my periods just like normal every 28 days like I did before I got pregnant... then all of a sudden I didn't have my period I thought I was pregnant, now after 1 year, 7 blood tests and an ultra sound later yup not pregnant... I am so frustrated and confused what is wrong with me?!

Are you on borth control? Because if your dose is too low, then it may prevent you from having periods.

Sorry I meant birth control not borth.