hi. I ve been seeing this girl lately, im 21, shes 19. We want to have sex, but i cant get a boner. i recently had blood work, and my doctor told me i needed to start taking iron supplements, and vitamin d, because my levels were low, close to anemic. At this point in time i didn t relize erection problems. now that i ve found someone i want to be with, im realizing im having problems. Is there any supplements, or natural ways to help me get going down there, cause clearly I m not 70 years old? Or could this be performance anxiety? Thanks