Have I been spiked?

I have ordered a Long island drink with my friend. Maybe this was dumb from me but i left my drink unattended for a while, and went back to drink more of it. Firstly, i went to the bathroom and was confused as to why I felt drunk already. I have drank barely a quarter of my drink and the affects are hitting already, and im usually quiète the heave weight when it comes to drinking. I ordered a glass of water and went back to drinking a little more. After some time I just felt so uneasy and had slight paranoia. I went outside for a breather to contain myself and I was extremely dizzy. We decided to leave my bar and i was so forgetful i haven’t realized i forgot my bag there. To be fair, walking to the next destination is a complete blur to me , but i just didn’t feel well. We arrived and I became quite psycho and I had so much energy in me. I couldn’t sit down i kept having to pace back and fourth and i was causing quite the scene. I felt better by the end of the night and barely drank my long island. Is there a possibility someone could’ve spiked me? and if so then with what?