I don't think everyone here understood that you are not baptized. Since your not, your parents will probably not do anything to drastic just because you have doubts. They will just try to convince you that their religion is right.
If they involve the elders, they cant really do anything since you have no "contract" with the organisation.. But, depending on what you tell them they might mark you as bad association and that can be very lonely for you, so be careful.
Jehovah's witnesses believes in religious freedom until your baptized. So you can discuss things with your parents but make sure that you are taking a questioning approach; I don't understand this, how can that be the case? etc. And don't refer to "Apostate sites" on the internet, they will think that you have been poisoned by apostate thinking and that can damage your relationship with them.
Also, when it comes to what to believe, Only you can figure that out. A lot of people here don't believe in God and they will argue for that position.
You will have to study this topic on your own to come up with your own conclusions. Before, you have had other people tell you what to believe, don't make that mistake again. Research what to believe yourself, don't take anyone else's word for it.