Some days it seems like you are lost in your grief. I know, because I still have those same feelings about my dad and he has been gone for nine years now. I try to focus on the days that he lived and not that one day that he died, but sometimes it is just not possible. As long as I only dip my toe in pity for awhile and not dive head first into it, then I think it is a natural process of life.
I totally can relate to your feelings. I lost both my parents 4 months apart, but both quite suddenly. You just have to give yourself time. I know the longing and the pain that you feel in your heart, but what helps me is to know that they want me to be HAPPY. I am sure that is what your parents wanted for you as well. Just know that they ARE in a better place, and I truly believe that they held your unborn child before you even concieved. I have an adopted daughter and I truly believe that they picked her out just for me. Some days are very hard and may faith weens, however, I try my best to keep moving forward, just as you are. Remember, your parents greatest gift is seeing you an independent happy woman..and now it is time for you to do the same for your children. It is all in the circle of life. Someday, we will all be together again, so make the best of here while we have it. I don't know your beliefs, and mine are all mixed, but I know that the book by John Edward, One Last Time, helped me so much with my parents passing. He gave me hope in knowing that they are always with me. God bless you and I hope you find that closure and peace.