Im 21 years old and am worried about my fertility. I am engaged and have been trying to concieve with my partener for 2 years with no luck my periods have never been regular but have gone from 31-45 days to 4-6 months the last time my period was *regular* i had a intro and external scan in hospital (30mins after i began) and the nurse said my lining was 1.6mm and that i shouldnt be experiencing a period. Im getting very concerned and although i know im still young its having a great impact on my life (crying/depression) please help as all my doctors say is dont worry and im sure itll be fine. Many thanks