Good evening doctor. Actually my gyno prescribed me l arginine 1000 mg per day during the first day of cycle till the ovulation happen. My endometrium lining thin. Age 28. I had pcod bt no cyst only some facial hair on my chin andnovel so she told me that I have hormonal issue. I want to get pregnant so taking l arginine is helpful or not. One thing doctor I am taking l arginine 5 day of my cycle and my period flow increased. I am worried am taking l arginine or nt. follicle monitoring done 2 times doctor told me thin endo. 6.2.plz suggest me doctor what I do.