My endometrial thickness is around 3.3mm on the 10th day of my cycle and I have a dominant follicle of 16.5mm. The doctor has asked me to take duphaston 10mg 2-4 times a day for the next few days.  I am really hoping to conceive soon. I was wondering if it is better to take L-arginine in addition to this? Any advice?

Summarized question: Are there better chances of pregnancy with L-arginine?