If you feel like you are being pressured, TELL THEM SO. If you aren't ready to take that step, you aren't ready, plain and simple.
If you were dating someone and they started pressuring you to get married, you would know that something just wasn't right. A person who really loved you and cared about you would not pressure you. They would wait until you were sure and were ready to make such a huge commitment.
Women who have been abused by their husbands are often surprised at how quickly the guy changed from "romantic" to abusive as soon as the ring was on their finger. They are misled into believing that "pressure" to get married is a sign of deep love and devotion, when in reality it is a control tactic.
Just so you know, JWs will do and say whatever they need to do in order to lead someone to get baptized. Once you are baptized, though, expect that the friendships will cool off while they move on to their next recruiting target.
Why don't you take a vacation for a few weeks from going to the meetings, etc. and see how they treat you when you do that. You aren't under any obligation to go to all the meetings - you aren't baptized - maybe tell them that you want to discuss this very important decision with your family. Watch how they react. They will probably tell you that it's a bad idea, and that your family will try to stop you. What they are trying to do is come between you and the people who love you unconditionally and truly care about your well-being. JWs, on the other hand, only care about you on the condition that you attend all the meetings and go door-to-door and do everything that the WTS instructs you to do.
Just don't feel that you HAVE to get baptized. You don't. This is YOUR life. It's YOUR relationship with god. It's YOUR decision. Don't let anyone pressure you into it.