[Superfly7XAF]

This is an interesting question. At first I thought it was just you, but after physically thinking about it, you might be on to something. Just my opinion but it seems like when taking off the pilots (in the front) would experience a more gradual and "easy" rotation from level upwards as the nose slowly lifts off the ground, whereas at the same time the passengers in the back would rotate if anything the opposite direction of the trajectory of the plane (in other words slightly dip before being pulled back up while taking off).

So looking at thinks from a profile prospective taking off the pilots would move linearlly then gradaully rise up very smoothly, being that their at the front of the plane. However people in the back would be level then move slightly down then suddenly up. This jerk might give you slightly more Gs and the sensation you're talking about.

Just my .02