the real issue is being afraid to talk to your own husband...you have to learn a safe way to do that...the block might be entirely you, or some in your husband and his tendency to react..in either case, a good marriage counselor could do wonders for you and your husband.
try sitting down and telling him the truth . it is hard but if you want to save your marriage you should try. lieing only leads to more lies . its never ending. just explain all to him . i'm sure he will understand