A Believer, you are saying you have studied other religions in the past weeks and you reassured yourself you are in the truth.
May I ask you to be more specific on how you conducted your research?
You say for example you studied history of Christian church in the first centuries.
How did you do it?
Can you list books you read, perhaps webpages you examined, primary sources you went through etc.?
Or you just used defendingjehovahswitness, the third witness and other JW apologetic sources to reaffirm your beliefs?
Have you tried to read the Studies in Scriptures or some Rutherford books? Or EGW's 'The Great Controversy' to understand religious climate in 19th century?
Have you picked some 'old truth' and tried to understand why it is wrong? Where the FDS did the mistake?