No period

I don't get it I feel so lost. I'm so ready and still nothing. I've had not had my period for almost two years. I've tried birth control but it does not help. I'm taking prenatal vitamins right now and that's all. Me and my husband have been trying to make a little blessing but nothing works. I have faith and hope and never give up but I don't know what to do anymore. I'm 19 married been married since November and now its time to have a family. If there is any lady out there who has tried something and it worked please let me know. Thank you.