Stupid question

So I’m very new to drinking. If I do drink I wontdo it alone I’m very picky to who I drink with due to safety reasons. Well last night my bf decided to drink coke and rum around 5-6ish pm. I decided to drink a bit with him since he is one of the few people I trust drinking with. Well we shared about 3 cups of it last night. Thankfully I’m with a good guy who cut the drinking off after 3 for us and didn’t do anything to try to harm me or anything like that. Well he passed out around 7pm and I stayed up. Around 10pm I got super nauseous but couldn’t puke for some reason. Today I had felt alright but still super nauseous. Around 4pm I puked twice. Is it from the alcohol? I did eat very little today and I barely ate yesterday before I had started drinking. Is this like normal? 😂 ive never dealt with this before when it comes to drinking 😂