She became Muslim after committing zinaa; does she have to wait (‘iddah) before getting married?
Question

                If a sister has just accepted Islaam, but before that she did have sexual relations with a "boyfriend", then if she wants to marry once she has entered into Islaam what is her situation. In other words, she had sex before becoming Muslimah, then after that she wants to marry; is there a special waiting period for her since she is not certain whether or not she got pregnant after having sex while still a kaafirah?
Praise be to Allah.The 
          following question was presented to Shaykh Muhammad ibn Saalih al-‘Uthaymeen: 
          
 A 
          woman is asking a question; she says that she has become Muslim but 
          she had a haraam relationship with a man. Should she wait (observe ‘iddah) 
          before she gets married, or not? 
 He 
          replied, may Allaah preserve him: 
 One 
          menstrual cycle is sufficient. And Allaah knows best.