Yes you should and need to be ashamed of converting to Islam. God will not be pleased that you have forsaken Him to follow a false god. I'm sorry you miss your Dad but you are making a grave mistake in forsaking the LORD. You must turn back to the True God the Lord Jesus Christ and repent of this idolatry and blasphemy!!PLEASE READ THE HOLY SCRIPTURES FROM THE BIBLE:Now in return for the same (I speak as to children), you also be open. Do not be unequally yoked together with unbelievers. For what fellowship has righteousness with lawlessness? And what communion has light with darkness? And what accord has Christ with Belial? Or what part has a believer with an unbeliever? And what agreement has temple of God with idols? For you are the temple of the living God. As God has said: