That depends entirely on how long you were pregnant before you miscarried. If you were very early in your pregnancy and miscarriage, say around 6 or 7 weeks, then you can get pregnant as soon as you feel up to having sex again. If you had to have a D&C procedure for your miscarriage then the doctor requires that you wait about 2 weeks before resuming sex so your body can heal. If you were far along in pregnancy and miscarried, say around 14 weeks or more, or if you had a molar pregnancy then some doctors may suggest you wait 6 months to one year, but that all just depends on the situation and your body. It is always best to speak with your doctor. In my own personal experience I didn't have to wait. I had a miscarriage at 5 weeks and it passed naturally and I resumed my regular cycle 4 weeks later. I became pregnant 3 months after the miscarriage. Best of luck to you.