Share your grieving even though it will be different for each of you. One of the tasks of this period is the re-negotiation of the couples' relationship. Emotional support from your husband is important now. Spend time together. Take walks or do things you may not have been able to do because of the demands of raising children.
Weekends away are important.
Getting reacquainted to one another without the interaction of the children between you will help to establish a new kind of relationship. Start courting each other again. And don't be surprised if you feel shy or awkward at first. Using the support of husband and friends can be the spring board to exploring new interests and activities or rekindle old interests left behind in the process of raising a family. The fact that you know what to do, but just can't seem to get yourself to do it is an indication that you are mourning.