New to drinking (tips appreciated)

Hi! I’m new to drinking and last night I had drank 2 fourlokos and a buzzball. I’ve drunk like twice in my life and this is the first time I’m experiencing a hangover. I threw up a bunch last night and my BAC according to google should have went back to normal a few hours ago. I am a slimmer guy so I understand it hit me harder than it would for others. I’m still experiencing brain fog and drowsiness. I’ve been drinking water and Powerade 0 sugar all day. Is there a way to get better faster? I possibly mightve had alcohol poisoning btw.