It is pretty rare ( not impossible ) to get
pregnant after 43 with your own eggs. Everyone has heard of someone who did (they are lucky!), but more often I hear of people who don't. As long as you are ovulating, there is hope. If you really want a baby badly enough, consider donor eggs. If you are healthy, there is no reason not to get pregnant, and its MUCH easier to do with young eggs. Once you feel the baby kick you will forget about whose DNA is whose!