There is nothing wrong with congratulating one another at the beginning of the month of Ramadan. There is nothing wrong with saying Ramadan Mubarak.

1- It is recommended to fast three days each month, and it is best to fast al-ayyam al-beed, which are the 13th, 14th and 15th of the month. 2- There is nothing wrong with you fasting three days in Sha’ban, even if some of those happen to be in the latter half of the month.

If a pregnant woman is able to pray standing up then she has to stand. Then if she becomes unable to stand or it is too difficult for her to stand, then she can sit down while praying.