Aqaaid

Predictions of astrologers

Q: I am 22 yrs old. I am in love with someone. I know this word doesn't have any meaning in our religion but I want to get married to him and my every salah includes this same dua. It is so happening these days that I came across 2 astrologers who predicted that I may not receive the life I wish. I completely do not want to believe in these things as I believe its all in the hands of Allah and its He who can do anything possible but these two incidents have disturbed be totally that I do not know what to do. 

Doing charitable work in the name of any person besides Allah Ta'ala

Q: Some members in our relatives give food in the name of others (instead of Allah). They tell that the reward of this charity goes to a particular person soul, also some say that we can give food, clothes etc... in the name of prophet (Sallallahu Alaihi Wasallam). Is it really true? Some give food after a death of a man (within 3 days and 40 days), some read Quran for their souls to be rewarded, is all of these are permissible? Could you please explain me.

Doubting the Imaan of people

Q: In America there are a lot of people that are converting to Islam. Sometimes I get the doubt that some of them are just acting like they converted but they are actually munafiq like there were munafiqeen in the time of the Nabi (Sallallahu Alaihi Wasallam). Is it wrong to doubt the iman of a Muslim if he is a Muslim zaahiran?