It could be fake but the chances are that it's not. Don't stress about the trip...if you do that then your trip might suck. I would take the whole hit. When I first did acid, I took seven hits. The trip was intense and lasted forever but it was great. I don't recommend
that for everyone. I was just with some old pro's and they knew what the concentration was in the hits so that's what they recommended according to the acid that was available. I've tripped perfectly well on one hit before so it's all about the acid you have.
Anytime you stress about a trip or a high, it will affect the trip or high. Don't even think about it. Just let it happen. Go with the flow. Yeah, you'll be excited with anticipation but don't
worry about what will happen, just let it happen.
Word of advice...don't be out in public when you peak. My first time was insane at the peak of my trip because I was in a huge grocery store after midnight and diapers were chatting with me, so I don't recommend being out like that.
Just have fun!!!