After a Miscarriage

My fiancé and I were so excited to say that I was pregnant. Went to the doctors and they predicted 6 weeks, we tried not to tell too many people because we didn't want to jinx it..... about a week later I started to bleed so I went to my GYN. After 2 blood tests and an ultrasound, he informed me we lost the baby. This is my first time ever being pregnant. How long should I wait to try again??