When a caged queen becomes pregnant she will stop calling and the male will become disinterested in her. If the male is still showing interest it is best to leave them together for a few more days. When the female has been separated from the male she will no longer have a heat cycle. It is best to keep a schedule of your queen's calling cycle to assist in judging the time she may next call. With time you will know by the color change of her nipples and affectionate changes in personality that she is pregnant.
It has been my experience that breeding a male cat does not decrease spraying. With many males it then becomes a life time habit that is difficult to break. Although aggression may cease spraying unfortunately may continue to be a problem.
Please let the Forum know the outcome of your queen's progress. The best of luck to you with your future litter.
Jasmine Kinnear,
Feline Behavior Consultant
Confessions of a Cat Breeder