They should. I know a woman that had a baby and lost her in labor

and when she tried to get pregnant again she had a very hard time. Then she realised that was her problem as soon as the Dr saw what it was she was given Clomid and got her BFP the first cycle! If your Dr will not do anything then I would call another. Her Dr told her that with her Short LP even when the egg and sperm meet it did not have time to implant before AF came. Good Luck and keep us updated!