I m extremely sad. Yesterday miscarried my 2nd pregnancy. Dr. Couldn t tell me why. I feel so empty. I have a 2 1/2 daughter so I have had a successful pregnancy before. My hcg was 25. They said that was too low to be 6 weeks. We wnt to try again, but is it ok that I take folic acid, iron and a prenatal supplement prior to concieving? And how long should we wait?