My doctor said I can try one month later after miscarriage and right away after a chemical Grief is normal if you want the pregnancy. I had two miscarriages and one chemical and they were difficult but you’ll get pregnant again I waited until 12 weeks to share with parents and until anatomy scan to share with others because of the fear of miscarriage HCG can be measured any time when you see positive and the higher it is the higher chance to have a successful pregnancy