everyone gets narced, some notice it and some don't realize it at all. It affects everyone differently, just like alcohol.
When I get narced, I don't feel tipsy, I feel slightly panicked and uncomfortable at being at that depth. I look at my gauges over and over. Other people I have spoken with say they see weird things, like mermaids or people swim by them without scuba gear on. LOL
I get the same symptoms as you. Mild panic; Rapid breathing; Really uncomfortable. Not sure "why I'm doing this". I want to "get out of there fast". Then I stop, breathe slowly and it seems to go away. The temp also affects me. Cold water exacerbates the narcosis. 150 feet in Belize, Curacao or Cozumel - never felt a thing. 120 feet at 49F in NJ and I'm scared out of my fins. I gotta admit that it took me a while to realize that I was narc'd. I too lived in a state of denial. Then I started diving Trimix and presto it was gone! Let's all praise Helium.