In its sense, if you receive holy spirit, you would become christian. See Acts first couple of chapters.
In this sense your JW babtism is not christian although you may have a faith related to christ. It is of interest that Peter expressed him self as saying "who can forbid water" when holy spirit had fallen upon Cornelius and his household.
please, note that later on, the prison guard did not receive holy spirit but was yet babtised. So it seems that quite ealry in christian history the things began to change somewhat.
Further, it is of interest to note that John expresses himself quite clearly as to the requirements: Minimum requirement is that one believe Jesus to be his savior. Joh 1:12-13 LITV (12) But as many as received Him, to them He gave authority to become children of God, to the ones believing into His name, (13) who were born not of blood, nor of the will of the flesh, nor of the will of man, but were born of God. Joh 1:12-13 LITV (12) But as many as received Him, to them He gave authority to become children of God, to the ones believing into His name, (13) who were born not of blood, nor of the will of the flesh, nor of the will of man, but were born of God. So, basically, depending on your understanding of the time of your babtism, you may feel it to be of value or not.
There-s one other thing I-d like to point out. (Acts 18:24-28) “24 Now a certain Jew named A·pol´los, a native of Alexandria, an eloquent man, arrived in Eph´e·sus; and he was well versed in the Scriptures. 25 This [man] had been orally instructed in the way of Jehovah and, as he was aglow with the spirit, he went speaking and teaching with correctness the things about Jesus, but being acquainted with only the baptism of John. 26 And this [man] started to speak boldly in the synagogue. When Pris·cil´la and Aq´ui·la heard him, they took him into their company and expounded the way of God more correctly to him. 27 Further, because he was desiring to go across into A·cha´ia, the brothers wrote the disciples, exhorting them to receive him kindly. So when he got there, he greatly helped those who had believed on account of [God’s] undeserved kindness; 28 for with intensity he thoroughly proved the Jews to be wrong publicly, while he demonstrated by the Scriptures that Jesus was the Christ.” It does not say he got babtised again.
(Acts 19:1-7) “19 In the course of events, while A·pol´los was in Corinth, Paul went through the inland parts and came down to Eph´e·sus, and found some disciples; 2 and he said to them: “Did you receive holy spirit when YOU became believers?” They said to him: “Why, we have never heard whether there is a holy spirit.” 3 And he said: “In what, then, were YOU baptized?” They said: “In John’s baptism.” 4 Paul said: “John baptized with the baptism [in symbol] of repentance, telling the people to believe in the one coming after him, that is, in Jesus.” 5 On hearing this, they got baptized in the name of the Lord Jesus. 6 And when Paul laid his hands upon them, the holy spirit came upon them, and they began speaking with tongues and prophesying. 7 All together, there were about twelve men.” Again, scripture does not tell if they got babtised again. However, they were only familiar with John babtism. Yet, they were to receive holy spirit without a "proper christian babtism".
So, AK. If you feel you should be babtised again, please do so to ease your mind. If you feel comfortable with the babtism you already had, than lay it at rest.
cheers
Borgia