I miscarried twins four months ago, and am yet to have a period. I have no cramps, but I feel as though I am pregnant again. I have lost three children in three years, and my blood and urine tests have all came back negative for both times I was pregnant, so I do not feel like I can trust the tests. In fact, before my first miscarriage, an ultrasound couldn't even detect the child in my womb. Is it normal to go so long without having a cycle? Or is it a possibility that I am with child again so soon after losing the two only four months ago?