Advice to an imaam who shaves his beard
Question

                In our centre we pray salat'u tarewea but one of the boy's who 
actas a Immam used to trim his beard inspite that he is good 
reciter of quran and also has a good voice.
1. The question is shall we allow him to act as imam beside 
that there is the altenative of boys who can act as imam.
2. My wife is preganent in our second months she can only 
fast few days what shall I do to rectify her due days which she 
didn't fast.
Praise be to Allah.
  If your imaam shaves his beard, then you should advise him to let it grow, in 
  adherence to the Sunnah of the Prophet  (peace and 
  blessings of Allaah be upon him). If he refuses, then ask someone else who can 
  recite Qur'aan well, even if he has not memorized as much or does not have as 
  beautiful a voice. If you cannot find anyone but this man who can recite well, 
  then let him lead the prayers, but keep advising him. May Allaah guide him to 
  follow the sunnah and become a leader who sets the right example.
  One of the scholars was asked the following question: We are led in prayer by 
  a man who shaves his beard. Are we permitted to pray behind him or not?
  He answered: If this man who shaves his beard is the official permanent imaam 
  in a mosque, you should try to replace him with someone better, and look for 
  someone who is righteous and qualified, and free of this sin, who could be appointed 
  as the imaam. If he is an imaam who always leads the prayers in an office or 
  school, leading zuhr prayers during work hours, then first of all you should 
  advise him of how abhorrent his action is. If he then persists, then try to 
  find someone else who does not have this fault, even if he is less skilled in 
  recitation. But if this is a situation where he is leading the prayers only 
  once, then there is nothing wrong with praying behind him if he goes forward 
  to lead the prayer and you cannot find anyone better than him. In general, such 
  a prayer should be good enough, in sha Allaah, but you should know that you 
  have to advise him and every other Muslim who falls into the error of committing 
  this sin or others. 
And Allaah knows best. 
  (Fataawa Islaamiyyah, 1/393)
  A pregnant woman is excused from fasting, and all she has to do is make up the 
  fast later on. See the book titled "70 Issues Relating 
  to Fasting" under the topic of "Women's fasting," page 
  34 (Section 17 in English Translation), first paragraph. 
And Allaah knows best.