@imei2012 we are all born in a natural state of Fitrah, that is we are all born Muslims, it's our parents that make one a Christian, Jew etc.... Why do I say we are all born Muslim? The word Muslim means one that submits to the will of God, so in reality you are thinking of reverting back to Islam and not converting.
Islam is not a new religion because ‘submission to the will of God’(Islam), has always been the only acceptable religion in the sight of God. For this reason, Islam is the true ‘natural religion’ and it is the same eternal message revealed through the ages to all of God’s prophets and messengers. The main message of all the prophets has always been that there is only One True God and He alone is to be worshipped. These prophets start with Adam and include Noah, Abraham, Moses, David, Solomon, John the Baptist, and Jesus, peace be upon them all. Allah says in the Holy Qur'an:
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We did not send before you (O Muhammad) any messenger but We revealed to him: ‘none has the right to be worshipped except I, therefore worship Me." Qur'an(21:25)
Allah has created man and given him reason and He has sent down to him Revelation(The Qur'an) and sent to him Messengers and prophets(Noah, Abraham, Moses, Jesus, Muhammad etc peace be upon them all) to call him to the truth and warn him against falsehood. Then He has left him to make his own choice. The choice is ultimately yours. Allah says in the Qur'an:
"And say: ‘The truth is from your Lord.’ Then whosoever wills, let him believe; and whosoever wills, let him disbelieve." Qur'an(18:29)
The guys calling you lost may be the ones that are indeed lost, the ones calling you a potential terrorist are lost minds. My suggestion before you think of reverting back to Islam read and research on what Islam is all about, there's tons of info on the internet, then from there make your choice, may Allah guide you like he guided me and millions like me. If you ever become Muslim get ready to hear all kinds of abuses poured on you, our prophet and our religion but never and I repeat never abuse Jesus or any of the prophets found in the Bible or never abuse the Christian religion, coz once you do so, you'll immediately exit the fold of Islam....