just don't feel anxious. gather friends and families to support you all the way.
your husband's caressing moments is important. he needs to know how crucial it is to experience miscarriage again and that support and pampering is what you really need at most.
take good care of yourself. do not do anything that can lead to a miscarriage again. focus on yourself being pregnant and pay attention to you health.
you can also get some of relaxation exercise.
talk to your doctor as often as possible and of course don't forget your regular prenatal.