I lost a daughter at 16 1/2 weeks a few years ago, and my best advice is to find a therapist or a support group (or both) to help you through the grief process. It takes time, a lot more time than I expected, to process the pain and grief (I still have a box of things I cannot touch because it makes me sad to even think about it). I totally understand your desire for another child, but give yourself some time...the next pregnancy may be very stressful (mine was, as I was constantly worried that something would go wrong), so you want to be as prepared as possible for that.
Does your OH not want to try again at all, or just not now? If he doesn't want to try again at all, that may be very difficult for you. If he just wants to wait a bit, then maybe you can agree on when to start trying again? In the meantime, cry and mourn and process through your grief, and know it may take a lot longer than you'd expect, but eventually the pain will decrease. My thoughts are with you!