Seeking some Help.!!

Hello everyone,

I am new to this forum. And I read many of the posts here which really have helped me. To start with, I would like to make some things clear. It has been a month or something since I am practicing Astral projection. I have never practiced Lucid dreaming consciously in my Life. I am a new bee in the same, though I have studied quite a lot about it. And I have been practicing Meditation of third eye since many years. I would like some help. Hope I can get it here. Well, I usually try astral projection during the evening hours, near around 07 PM daily. I know this is not a good time unlike the very effects of astral projection which take place during the early morning hours. But I can find peace and silence during these hours, and proceed with the relaxation state. I successfully pass the hypnagogic and phosphogenes stage. And often times I successfully come past the Vibration stage too. My body feels really heavy that time. I am never scared or frightened about the same. The difficulty I come across is, how can I roll my body out then.? I have studied various stuff here, about the mouth exit and all, but trying all doesn't help. Every time, I visualize that My astral body is leaving physical body, at the end there is always this feeling at back of my mind that This all is my IMAGINATION and no astral body. Hence I lose the trance. I visualize that my astral body is leaving me, it sees my physical body in the room, and can travel various places, but I am not sure of this being astral projection or mere imagination. Reason being, I don't know how it really feels doing the astral travel. Travelling in the astral planes etc. Can we feel our physical body when we astral travel.? Do our physical body moves that time.? What it EXACTLY feels like, when you leave your body.? How do you know, it's not imagination and your astral body.?  Please help me with the same.!
P.S. Sometimes I find it hard to make my vibrations flow into my chest and head. Is there a way to do the same with ease. I have read, that it shouldn't include any efforts and come out normally. Reply is greatly appreciated.
Thanks a lot in advance  :)